Ante n na S wi t ch Mo d u le : B G S F1 717 M N2 6 Ante n na S wi t ch Mo d u le wi th i n tegr a ted MI P I R F F E Int er fa ce, 2 G SM TX P or ts f or multi -m od e GS M/ E D GE, W CD M A or L TE Appli cat io ns a nd C ar r ier A g gr e gat io n Application AN384 Solut iNote ons About this document Scope and purpose This application note describes Infineon’s Antenna Switch Module BGSF1717MN26 as main antenna switch module for multi-mode GSM/EDGE, WCDMA or LTE Applications and Carrier Aggregation applications. 1. This application notes gives an overview about main purpose of this SP7T Low Band + SP7T High Band Antenna Switch Module. 2. Multi-mode GSM/EDGE, WCDMA or LTE Applications and Carrier Aggregation are the primary application of this document. 3. The Printed Circuit Board (PCB) design as well as antenna matching network proposed in this note provides a customer oriented approach where a single ASM enables multi-mode GSM/EDGE, WCDMA or LTE and Carrier Aggregation applications 4. Key performance parameters include higher Isolation between input channels (~32dB), integrated SAW Filter for LB and HB GSM Tx inputs, very low IL of the TX channels (0.5dB), integration of SP7T LB and SP7T HB in one module and an integrated MIPI RFFE Interface. 1 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Table of Content Table of Content About this document ................................................................................................................... 1 1 1.1 1.2 1.3 1.4 Introduction of BGSF1717MN26 .................................................................................... 5 Main Features ...................................................................................................................................... 5 Functional Diagram............................................................................................................................. 6 Pin Configuration ................................................................................................................................ 7 Pin Description .................................................................................................................................... 7 2 Application ................................................................................................................. 9 3 3.1 3.2 3.2.1 3.2.2 Application Circuit of BGSF1717MN26 ......................................................................... 10 Application Board ............................................................................................................................. 10 Deembedding .................................................................................................................................... 11 Deembedding concept with a “prepared” SMA connector and a “Half-Thru” boardPort Extension ..................................................................................................................................... 11 Deembedding control process ................................................................................................... 12 4 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.1.7 4.2.6 Small Signal Characteristics of BGSF1717MN26 ............................................................ 13 Small Signal Parameters LB switch .................................................................................................. 13 Insertion Loss from LB Antenna to the respective RF TRX Port ................................................ 13 Insertion Loss TX LB port ............................................................................................................ 14 Insertion Loss high linearity ultra low IL TRx10 port ................................................................. 14 Return Loss from LB Antenna to the respective RF Port ........................................................... 15 Return Loss of LB TRX RF ports to LB Antenna .......................................................................... 16 Return Loss TX LB RF port........................................................................................................... 16 Antenna to port and Port to Port Isolation LB path .................................................................. 18 Antenna to port and Port to Port Isolation HB path .................................................................. 25 5 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.1.5 5.2 5.2.1 5.2.2 5.2.3 Non-Linear performance of BGSF1717MN26 ................................................................. 28 Intermodulation ................................................................................................................................ 28 Intermodulation Measurement Setup ......................................................................................... 29 Intermodulation Measurement conditions for Band I ............................................................... 30 Intermodulation Measurement Results for Band I .................................................................... 30 Intermodulation Measurement conditions for Band V .............................................................. 31 Intermodulation Measurement Results for Band V ................................................................... 31 Harmonic Distortion........................................................................................................................... 32 Harmonic Generation Measurement conditions ......................................................................... 32 Harmonic Generation Measurement Results of Low Band inputs .............................................. 33 Harmonic Generation Measurement Results of High Band inputs ............................................. 35 6 Switching time.......................................................................................................... 36 7 7.1 7.2 Appendix: Switch Controller Unit ................................................................................ 37 Operating Guide ................................................................................................................................. 37 Display Settings of the Controller Unit .............................................................................................. 38 8 Authors .................................................................................................................... 39 Revision History ......................................................................................................................... 40 Application Note AN384 2 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface List of Figures and Tables List of Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 BGSF1717MN26 in TSNP-26-3 ............................................................................................................. 5 BGSF1717MN26 Functional Diagram ................................................................................................. 6 BGSF1717MN26 Pin Configuration .................................................................................................... 7 BGSF1717MN26 in mobile phone cellular frontend (typical discrete LTE-A feature set) ................. 9 Layout of the application board ....................................................................................................... 10 PCB Layer stack-up ........................................................................................................................... 10 “Half-Thru” deembedding board ..................................................................................................... 12 “Full-Thru” deembedding board ...................................................................................................... 12 Application circuit BGSF1717MN26 .................................................................................................. 13 Forward transmission from LB Antenna to TX LB port .................................................................... 13 Forward transmission from LB Antenna to TX LB port .................................................................... 14 Forward transmission from LB Antenna to TRX10 port ................................................................... 15 Return Loss from LB Antenna to the respective TRX LB RF port ..................................................... 15 Return Loss of LB TRX RF ports to LB Antenna ................................................................................ 16 Return Loss port TX LB RF port ......................................................................................................... 17 Return Loss of high linearity ultra low IL TRX10 RF port ................................................................. 17 Worst case Antenna to Port Isolation Low Band part ...................................................................... 20 Worst case Port to Port Isolation Low Band part1 ........................................................................... 20 Forward transmission from HB Antenna to the respective TRX HB RF port ................................... 21 Forward transmission from HB Antenna to the respective TX HB RF port ..................................... 22 Return Loss from HB Antenna to the respective TRX HB RF port .................................................... 23 Return Loss from HB TRX RF ports to HB Antenna.......................................................................... 24 Return Loss of HB TX RF port ............................................................................................................ 24 Worst case Antenna to Port Isolation High Band part ..................................................................... 27 Worst case Port to Port Isolation High Band part1 ........................................................................... 27 Block diagram of RF Switch intermodulation .................................................................................. 29 Intermodulation Measurement Test Setup ...................................................................................... 29 Intermodulation measurement results for Band I ........................................................................... 30 Intermodulation measurement results for Band V .......................................................................... 31 Harmonic Generation Measurement setup ...................................................................................... 32 Measurements of Harmonic power over Carrier power of Low-Band inputs to LB Antenna ......... 33 Harmonic power measurements of high linear LB input TRX10 over the Band 17 carrier............. 34 Measurements of Harmonic power over Carrier power of High-Band inputs to HB Antenna ....... 35 Switching time measurements of the TX_LB input to the LB Antenna ........................................... 36 Switch Controller Unit Board ............................................................................................................ 37 Application Note AN384 3 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface List of Figures and Tables List of Tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Pin Description (top view) ................................................................................................................... 7 Insertion Loss from LB Antenna to TX LB port ................................................................................. 13 Insertion loss from LB Antenna to TX LB port .................................................................................. 14 Insertion loss from LB Antenna to TRx10 port ................................................................................. 14 Return loss from LB Antenna to the respective TRX LB RF port ...................................................... 15 Return loss from respective TRX LB RF port to LB Antenna ............................................................ 16 Return loss from TR LB RF port ......................................................................................................... 16 Return loss from TRX10 RF port ........................................................................................................ 17 Worst case Antenna to Port Isolation High Band part ..................................................................... 18 Worst case Port to Port Isolation Low Band part ............................................................................. 19 Insertion Loss from HB Antenna to the respective TRX HB RF port ................................................ 21 Insertion Loss from HB Antenna to the respective TX HB RF .......................................................... 22 Return Loss from HB Antenna to the respective TRX HB RF port ................................................... 23 Return Loss from HB TRX RF ports to HB Antenna .......................................................................... 23 Return Loss of HB TX RF port ............................................................................................................ 24 Worst case Antenna to Port Isolation High Band part ..................................................................... 25 Worst case Port to Port Isolation High Band part ............................................................................ 26 Test conditions and specifications of IMD measurements .............................................................. 30 Typical and maximal value of intermodulation products in dBm for Band I................................. 30 Test conditions and specifications of IMD measurements .............................................................. 31 Typical and maximal value of intermodulation products in dBm for Band V................................ 31 Harmonic Generation measurement Conditions ............................................................................ 32 Switching time values ....................................................................................................................... 36 Seeting Display of Active RF Path, Power UP, Power Down and Isolation State ............................ 38 Application Note AN384 4 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Introduction of BGSF1717MN26 1 Introduction of BGSF1717MN26 For RF Front-End solutions that integrate new features such as downlink inter-band carrier aggregation to increase Downlink data rates, Antenna Switch Modules (ASMs) are facing new challenges. Two RF signals being transmitted in different frequency bands have to be routed from two different antennas – one dedicated for low frequency band and one for high frequency band - to the RF Transceiver at the same time. For this kind of application, the new switch which combines two SP7T ICs and the MIPI control interface, the so-called DP14T, have been introduced to the market. The BGSF1717MN26 is a double Pole Fourteen Throw (DP14T / SP7T+SP7T) ASM optimized for wireless applications up to 2.7 GHz. It is a perfect solution for multi-mode handsets based on quad-band GSM, WCDMA, LTE and ideal for carrier aggregation solutions. TRX10 is designed to achieve ultra-high linearity. The ASM configuration is shown in the Figure 2. The module comes in a miniature TSNP package shown in the Figure 1 and comprises of two high power SP7T switches with integrated MIPI RFFE interface and harmonic filters for GSM high and low band transmitter signal paths. The on-chip MIPI RFFE interface supports both 1.2 V and 1.8 V supply voltages. No external DC blocking capacitors are required in typical applications as long as no DC is applied to any RF port. The pin assignment can be found in the Figure 3. 1.1 Main Features • Suitable for multi-mode GSM / EDGE / C2K / WCDMA / LTE applications and carrier aggregation • 2 high-linearity GSM TX paths • High port-to-port isolation • Integrated MIPI RFFE interface Operating from 0.1 to 2.7 GHz coverage • No decoupling DC capacitors required, if no DC applied on RF lines • Ultra-low insertion loss and harmonics generation • Small form factor: 3.2 mm x 2.8 mm x 0.73 mm • Integrated GSM transmit filters • 12 interchangeable, high-linearity WCDMA TRX ports • Port TRX10 designed for ultra-high linearity Figure 1 BGSF1717MN26 package in TSNP-26-3 Application Note AN384 5 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Introduction of BGSF1717MN26 1.2 Functional Diagram Figure 2 BGSF1717MN26 Functional Diagram Application Note AN384 6 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Introduction of BGSF1717MN26 1.3 Pin Configuration GND TXLB GND TXHB GND 13 12 11 10 9 8 TRX1 15 7 TRX2 TRX9 16 6 TRX3 TRX10 17 5 TRX4 TRX11 18 4 TRX5 TRX12 19 3 TRX6 ANT LB 20 2 ANT HB GND 21 1 GND TRX7 14 TRX8 2.8 x 3.2 x 0.73 mm GND pad 22 23 VDD VIO Figure 3 BGSF1717MN26 Pin Configuration 1.4 Pin Description Table 1 Pin Description (top view) 24 SDATA 25 SCLK 26 GND Pin NO Name Pin Type 0 GND GND Ground, die pad 1 GND GND DC ground 2 ANT HB I/O High band antenna port 3 TRX6 I/O WCDMA TRX port 4 TRX5 I/O WCDMA TRX port 5 TRX4 I/O WCDMA TRX port 6 TRX3 I/O WCDMA TRX port 7 TRX2 I/O WCDMA TRX port 8 TRX1 I/O WCDMA TRX port 9 GND GND RF ground 10 TXHB I GSM HB port 11 GND GND RF ground 12 TXLB I GSM LB port 13 GND GND RF ground Application Note AN384 7 Function Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Introduction of BGSF1717MN26 Table 1 Pin Description (top view) Pin NO Name Pin Type 14 TRX7 I/O WCDMA TRX port 15 TRX8 I/O WCDMA TRX port 16 TRX9 I/O WCDMA TRX port 17 TRX10 I/O WCDMA TRX port 18 TRX11 I/O WCDMA TRX port 19 TRX12 I/O WCDMA TRX port 20 ANT LB I/O Low band antenna port 21 GND GND DC ground 22 VDD PWR Supply Voltage 23 VIO PWR RFFE supply voltage 24 SDATA I/O Data 25 SCLK I Clock 26 GND GND DC ground Application Note AN384 8 Function Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Application 2 Application A typical application of BGSF1717MN26 ASM in a mobile phone is shown in the Figure 4. At the main antenna path of the RF Front-End the BGSF1717MN26 switches signals from the high band and low band antenna to the different transceiver IC input and outputs. For the diversity path different Infineon RF switches can be used e.g. BGS16MN14, BGS18MN14. Infineon offers also besides ASMs, general purpose RF Switches and a broad portfolio of Low Noise Amplifiers and Antenna Tuner Devices. All of Infineon Products concerning mobile phone applications can be found in our newest Application Guide for RF & Protection Devices/ Mobile Communication. Antenna Aperture Switches (SPxT) HB LB Antenna Switch Module BGSF1717MN26 GNSS LNA ASM Powered by LTE LNA Diversity Switches (SPxT) LTE LNA Tx/Rx SPDT Tx/Rx SPDT Tranceiver 1 Figure 4 Tx/Rx DPDT Transciever 2 BGSF1717MN26 in mobile phone cellular frontend (typical discrete LTE-A feature set) Application Note AN384 9 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Application Circuit of BGSF1717MN26 3 Application Circuit of BGSF1717MN26 In this chapter the evaluation board with application circuit including matching passive elements is presented. Afterwards, the deembedding process required for S-Parameter measurements is described. 3.1 Device: BGSF1717MN26 Application: Antenna Switch Module PCB Marking: BGSF1717MN26 v1.1 EVB Order No.: BGSF1717MN26 BOARD SP001136296 Application Board The EValuation Board (EVB) used for the RF measurements is shown in the Figure 5. The EVB is designed so that every 50 Ohm signal lines have the same length. The layer stack-up of the PCB is presented in Figure 6. Figure 5 Layout of the application board Vias Rodgers, 0.2mm Copper 35µm Figure 6 FR4, 0.7mm PCB cross section with layer stack-up Application Note AN384 10 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Application Circuit of BGSF1717MN26 3.2 Deembedding The device (BGSF1717MN26) is deembedded from influence of the application circuit and coaxial connectors by at first measuring a coaxial connector and a “half-board” micro strip line and then by loading this data in the fixture simulator of the network analyzer. In the Figure 7 this deembedding concept is given. The deembedding of this RF device is performed in several steps explained in the next subchapters. Figure 7 Deembedding concept with a “prepared” SMA connector and a “Half-Thru” board 3.2.1 Port Extension In order to shift the reference plane of the network analyzer to the PCB signal line connect a SMA connector with a cut pin of the inner conductor to one port of the Vector Network Analyzer (VNA) and measure port extensions at this port. Figure 8 shows such a “prepared” SMA connector with an outer pin cut with a wire cutter. Outer conductor pin is cut Application Note AN384 11 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Application Circuit of BGSF1717MN26 Figure 8 SMA connector with cut inner pin After the measurement of the S21 of the half-thru board (given in Figure 9) with port extension turned on is completed, the s2p-data ought to be loaded in the fixture simulator. This measurement result includes the insertion loss and the phase shift of the one SMA connector and the transmission line to the chip. After all the port extension has to be deactivated. Figure 9 “Half-Thru” deembedding board 3.2.2 Deembedding control process Measure this full-thru PCB (given in the Figure 10) to verify your deembedding having the fixture simulator turned on for each port of the VNA, whereas port extension must be off. If the insertion loss is close to 0 dB and S11 reflection has a considerable value, further RF measurements can be done. Figure 10 “Full-Thru” deembedding board Application Note AN384 12 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 4 Small Signal Characteristics of BGSF1717MN26 The S-Parameters are measured at 25 °C with a VNA in an application circuit shown in Figure 11. 2.4 nH 2.7 pF Low Band Antenna High Band Antenna 1.5 pF 68 nH 5.1 nH Unused ports are terminated with 50Ω Figure 11 Application circuit BGSF1717MN26 4.1 Small Signal Parameters LB switch 4.1.1 Insertion Loss from LB Antenna to the respective RF TRX Port Table 2 Insertion Loss from LB Antenna to TX LB port Frequency (MHz) TRx7 TRx8 TRx9 TRx11 TRx12 704 716 740 751 824 881 915 942 -0.76 -0.74 -0.72 -0.67 -0.65 -0.76 -0.74 -0.71 -0.66 -0.65 -0.74 -0.72 -0.69 -0.64 -0.63 -0.74 -0.73 -0.7 -0.65 -0.64 -0.75 -0.73 -0.7 -0.66 -0.64 -0.75 -0.74 -0.71 -0.66 -0.64 -0.75 -0.74 -0.71 -0.66 -0.64 -0.76 -0.74 -0.71 -0.66 -0.64 Insertion Loss TRx LB paths 0 -10 0.96 GHz -0.6515 dB 0.6 GHz -0.6967 dB -20 2.1 GHz -28.21 dB -30 TR7 TRx9 TRx8 TRx11 TRx12 -40 -50 0.0003 Figure 12 2 4 6 Frequency (GHz) 8 10 Forward transmission from LB Antenna to TX LB port Application Note AN384 13 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 4.1.2 Insertion Loss TX LB port Table 3 Insertion loss from LB Antenna to TX LB port Frequency (MHz) 704 716 740 751 824 881 915 942 TR LB -1.37 -1.39 -1.42 -1.45 -1.51 -1.52 -1.51 -1.51 Insertion Loss Tx LB 0 0.915 GHz -1.51 dB Insertion Loss (dB) -10 1.71 GHz -41 dB -20 2.17 GHz -40.76 dB -30 -40 0.824 GHz -1.508 dB -50 -60 0.0003 2 4 6 Frequency (GHz) 8 Figure 13 Forward transmission from LB Antenna to TX LB port 4.1.3 Insertion Loss high linearity ultra-low IL TRx10 port Table 4 10 Insertion loss from LB Antenna to TRx10 port Frequency (MHz) 704 716 740 751 824 881 915 942 TR LB -0.56 -0.56 -0.54 -0.55 -0.55 -0.56 -0.55 -0.56 Application Note AN384 14 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 Insertion Loss TRx10 port 0 0.704 GHz -0.5647 dB Insertion Loss (dB) -10 0.716 GHz -0.5592 dB -20 -30 2.11 GHz -26.18 dB -40 0.0003 2 4 6 Frequency (GHz) 8 10 Figure 14 Forward transmission from LB Antenna to TRX10 port 4.1.4 Return Loss from LB Antenna to the respective RF Port Table 5 Frequency (MHz) TRx7 TRx8 TRx9 TRx10 TRx11 TRx12 Return loss from LB Antenna to the respective TRX LB RF port 704 716 740 751 824 881 915 942 -13.4 -14 -14.2 -14.5 -15.4 -15.5 -13.5 -14.1 -14.4 -14.6 -15.5 -15.6 -13.7 -14.3 -14.6 -14.9 -15.7 -15.8 -13.7 -14.4 -14.6 -15 -15.8 -15.9 -13.8 -14.5 -14.8 -15.2 -16.1 -16.2 -13.8 -14.5 -14.9 -15.4 -16.1 -16.2 -13.7 -14.4 -14.9 -15.4 -16.1 -16.2 -13.6 -14.4 -14.9 -15.4 -16.1 -16.2 ANT Return Loss all LB ports 10 Return Loss (dB) 0 -10 -20 TRx7 TRx9 TRx11 TRx8 TRx10 Trx12 -30 -40 0.0003 Figure 15 2 4 6 Frequency (GHz) 8 10 Return Loss from LB Antenna to the respective TRX LB RF port Application Note AN384 15 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 4.1.5 Table 6 Return Loss of LB TRX RF ports to LB Antenna Return loss from respective TRX LB RF port to LB Antenna Frequency (MHz) TRx7 TRx8 TRx9 TRx10 TRx11 TRx12 704 716 740 751 824 881 915 942 -13.7 -14.3 -14.8 -14.8 -15.8 -16.2 -13.8 -14.5 -14.9 -15 -15.9 -16.4 -13.9 -14.6 -15.1 -15.1 -16.1 -16.6 -14 -14.6 -15.2 -15.2 -16.2 -16.8 -14.3 -15 -15.7 -15.8 -16.9 -17.5 -14.4 -15.2 -16 -16 -17.2 -17.9 -14.3 -15.1 -15.9 -15.9 -17.1 -17.9 -14.4 -15.3 -16.1 -16.1 -17.3 -18.1 Port Return Loss all LB ports 0 Return Loss (dB) -5 -10 TRx7 TRx9 TRx11 TRx8 TRx10 TRx12 -15 -20 0.0003 2 4 6 Frequency (GHz) Figure 16 Return Loss of LB TRX RF ports to LB Antenna 4.1.6 Return Loss TX LB RF port Table 7 Return loss from TR LB RF port Frequency (MHz) ANT LB port TX LB port 8 10 704 716 740 751 824 881 915 942 -11.9 -10.1 -11.8 -10.1 -11.8 -10.1 -11.8 -10.1 -12.1 -10.1 -13 -10.7 -13.9 -11.4 -14.9 -12.3 Application Note AN384 16 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 Return Loss TX LB 10 0.89027 GHz -10.7 dB Return Loss (dB) 0 0.942 GHz -12.26 dB -10 -20 Antenna LB -30 TX LB -40 0.0003 Figure 17 Table 8 2 4 6 Frequency (GHz) 8 10 Return Loss port TX LB RF port Return loss from TRX10 RF port Frequency (MHz) ANT LB port TRX10 port 704 716 740 751 824 881 915 942 -14.5 -14.8 -14.6 -15 -14.9 -15.1 -15 -15.2 -15.2 -15.8 -15.4 -16 -15.4 -15.9 -15.4 -16.1 Return Loss TRX10 5 Return Loss (dB) 0 -5 -10 Antenna LB -15 TRX10 -20 0.0003 Figure 18 2 4 6 Frequency (GHz) 8 10 Return Loss of high linearity ultra-low IL TRX10 RF port Application Note AN384 17 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 4.1.7 Antenna to port and Port to Port Isolation LB path Apply to the Table 9 and Table 10 on the next page. Table 9 Frequency (GHz) 0.704 0.716 0.74 0.751 0.824 0.881 0.915 0.942 1.71 1.842 1.96 1.97 2.017 2.14 2.17 2.35 2.593 2.69 3.5 1 Worst case Antenna to Port Isolation High Band part1 TX HB active ANTHB ANTHB TRX1 TX LB TRX1 active ANTHB ANTHB TRX2 TX HB TRX2 active ANTHB ANTHB TRX3 TRX1 TRX3 active ANTHB ANTHB TRX4 TRX2 TRX4 active ANTHB ANTHB TRX5 TRX3 TRX5 active ANTHB ANTHB TRX6 TRX4 -39.5 -39.3 -38.9 -38.6 -37.4 -36.3 -35.8 -35.4 -45.4 -46.5 -50 -50.2 -52.8 -54.6 -49.8 -34.7 -40.9 -42.4 -56.4 -47.2 -46.9 -47 -46.4 -45.2 -44.1 -43.6 -43.5 -45 -48 -53.3 -54.5 -60.7 -61.9 -63.9 -53.2 -49.3 -47.9 -44.2 -37.3 -37.1 -36.6 -36.7 -35.9 -35.2 -35.1 -34.8 -33.1 -34.3 -39.6 -40.2 -44.9 -48.6 -46 -37.6 -32.9 -31.5 -27.6 -34.1 -34 -33.8 -33.7 -32.9 -32.5 -32.2 -32 -29.5 -31 -36.3 -37 -41.4 -46.2 -43.1 -34.6 -29.9 -28.7 -25.2 -33.4 -33.3 -33 -32.9 -32.3 -31.8 -31.5 -31.3 -28.6 -30.2 -35.3 -36 -40.5 -45.3 -41.9 -33.7 -29.3 -28.1 -24.9 -42.7 -42.3 -42.3 -42 -41.3 -40.5 -40.2 -39.8 -35.7 -37.1 -42.9 -43.8 -48.9 -51.4 -49.1 -42.2 -38 -36.5 -29.7 -39.7 -39.6 -39.8 -39.6 -39.3 -39.4 -39.9 -40.2 -30.2 -32.7 -36.8 -37.2 -40.4 -41.1 -36 -19.9 -24.8 -26 -28.9 -34.2 -33.9 -33.8 -33.7 -32.9 -32.5 -32.2 -31.9 -29.9 -31.3 -36.5 -37.3 -41.8 -46.5 -43.7 -35.1 -30.7 -29.5 -26.2 -35.5 -35.4 -35.2 -35.1 -34.3 -33.9 -33.5 -33.2 -30.6 -32 -37.3 -38 -42.2 -47 -44.1 -36 -31.3 -29.9 -26.2 -35 -34.8 -34.6 -34.4 -33.8 -33.4 -33.1 -32.8 -30 -31.5 -36.8 -37.5 -41.8 -47.1 -43.2 -35.1 -30.5 -29.2 -25.5 -38.3 -38.4 -38 -37.9 -37.1 -36.6 -36.3 -36 -32.4 -34 -39.3 -39.9 -44.2 -48.9 -45.8 -37.5 -33.1 -31.6 -27 Worst case isolation: Isolation between neighbor port of the active port, any other port have better (higher) Isolation Application Note AN384 18 Revision 1.0, 2015-10-03 -43.2 -42.9 -42.6 -42.1 -40.5 -39.2 -38.6 -38.2 -29.8 -30.9 -36.7 -37.4 -42.4 -44.1 -41.5 -34.5 -30.1 -28.9 -22.9 TRX6 active ANTHB ANTHB ANT LB TRX5 -39.3 -39.1 -39 -38.7 -37.9 -37.3 -36.9 -36.8 -32.7 -34.3 -40 -40.5 -45.4 -49.7 -46.6 -39.2 -34.5 -33.1 -25.6 -37 -36.8 -36.5 -36.2 -35.3 -34.5 -34.1 -33.8 -29.1 -31.1 -37.5 -38.4 -42.9 -48.2 -45.6 -38.8 -36.3 -35.6 -30.4 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 Table 10 Frequency (GHz) 0.704 0.716 0.74 0.751 0.824 0.881 0.915 0.942 1.71 1.842 1.96 1.97 2.017 2.14 2.17 2.35 2.593 2.69 3.5 1 Worst case Port to Port Isolation Low Band part1 TX LB active TRX7 active TRX8 active ANTLB ANTLB ANTLB ANTLB ANTLB ANTLB TX HB TRX7 TX LB TRX8 TRX7 TRX9 -39.6 -39.6 -39 -39 -37.8 -36.7 -36 -35.6 -35 -35.2 -35.2 -35 -35.2 -35.1 -35.4 -34.3 -33.2 -32.8 -30.9 -39.8 -39.9 -39.8 -39.9 -39.7 -39.8 -39.6 -39.5 -37.8 -37.7 -37.4 -37.3 -37.3 -36.2 -35.8 -35.9 -39.2 -38.2 -38.5 -40.9 -41.1 -40.5 -40.5 -40.4 -40.7 -40.8 -41.2 -46.1 -48.1 -43.4 -43.5 -42.2 -40.3 -40.2 -39.2 -38.8 -38.9 -45.8 -32.3 -32.2 -31.9 -31.7 -31.1 -30.5 -30.2 -30.1 -28 -25.3 -21.9 -21.7 -21 -19.8 -19.7 -19 -18.5 -18.7 -26.4 -34.9 -34.7 -34.4 -34.4 -33.7 -33.1 -32.7 -32.6 -28.8 -26.3 -23.5 -23.4 -22.8 -22 -21.9 -21.5 -21.6 -21.9 -25.5 -33.5 -33.3 -33 -32.9 -32.1 -31.6 -31.3 -31.1 -27.4 -24.7 -21.8 -21.6 -20.9 -20 -19.9 -19.4 -19.2 -19.3 -25.7 TRX9 active ANTLB ANTLB TRX8 TRX10 -32.1 -31.9 -31.7 -31.7 -30.9 -30.3 -30 -29.8 -27.3 -24.9 -21.6 -21.4 -20.5 -19.3 -19.1 -18.2 -17.6 -17.7 -25.8 -30.5 -30.4 -30.1 -30 -29.3 -28.7 -28.4 -28.2 -24.9 -22.9 -20.2 -20.1 -19.3 -18.2 -18 -17.1 -16.5 -16.6 -22.2 TRX10 active ANTLB ANTLB TRX9 TRX11 -31.4 -31.3 -31 -30.9 -30.2 -29.6 -29.3 -29.1 -26.7 -24.5 -21 -20.8 -19.9 -18.4 -18.2 -17.3 -16.5 -16.5 -24.6 -35.8 -35.7 -35.3 -35.3 -34.6 -33.9 -33.6 -33.4 -29.7 -26.8 -23.9 -23.7 -23.1 -22.1 -22 -21.4 -21 -21 -27.2 TRX11 active ANTLB ANTLB TRX10 TRX12 -35.2 -35 -34.8 -34.7 -33.9 -33.4 -33.1 -32.8 -28 -25.8 -23.9 -23.9 -23.5 -23.1 -23.1 -22.7 -22.4 -22.3 -24.9 Worst case isolation: Isolation between neighbor port of the active port, any other port have better (higher) Isolation Application Note AN384 19 Revision 1.0, 2015-10-03 -39.7 -39.8 -39.2 -39.1 -38 -37.2 -36.7 -36.2 -27.2 -23.7 -21.9 -21.9 -21.8 -21.9 -22 -22.4 -22.9 -23.4 -22.5 TRX12 active ANTLB ANTLB TRX11 ANTHB -36.2 -36.2 -35.9 -35.8 -34.9 -34.2 -33.9 -33.7 -29.5 -26.6 -24 -23.9 -23.4 -22.6 -22.5 -21.9 -21.1 -20.8 -26.3 -37.8 -37.6 -37.3 -37.1 -36.2 -35.6 -35.3 -34.9 -26.8 -24.7 -24.6 -24.7 -25.1 -26.8 -27.3 -29.7 -32.5 -33.9 -30.8 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 Isolation ANT to LB paths 0 Isolation (dB) -20 -40 -60 -80 TXHB to ANTLB LB active TRx7 to ANTLB TRx8 active TRx9 to ANT LB TRx10 active TRx11 to ANTLB TRx12 active TRx7 to ANTLB LB active TRX9 to ANTLB TRX8 active TRx9 to ANTLB TRx10 active ANTHB to ANTLB TRx12 active TXLB to ANT LB TRx7 active TRx8 to ANTLB TRx9 active TRx10 to ANTLB TRx11 active TRx8 to ANTLB TRX7 active TRx10 to ANTLB TRx9 active TRx12 to ANTLB TRx11 active -100 0.0003 Figure 19 2 4 6 Frequency (GHz) Worst case Antenna to Port Isolation Low Band part1 8 10 Isolation LB paths to LB paths 0 Isolation (dB) -20 -40 -60 -80 TXHB to TXLB LB active TRx8 to TRx7 TRX7 active TRx8 to TRx9 TRx9 active TRx9 to TRx10 TRx10 active TRx11 to TRx12 TRx12 active TRx7 to TXLB LB active TRx7 to TRx8 TRx8 active TRx10 to TRx9 TRx9 active TRx10 to TRx11 TRx11 active ANTHB to TRx12 TRx12 active TXLB to TRx7 TRx7 active TRX9 to TRx8 TRX8 active TRx9 to TRx10 TRx10 active TRx12 to TRx11 TRx11 active -100 0.0003 Figure 20 2 4 6 Frequency (GHz) 8 10 Worst case Port to Port Isolation Low Band part1 Worst case isolation: Isolation between neighbor port of the active port, any other port have better (higher) Isolation 1 Application Note AN384 20 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 4.2 Small Signal Parameters HB switch 4.2.1 Insertion Loss from HB Antenna to the respective TRX HB RF Port Table 11 Frequency (MHz) TRx1 TRx2 TRx3 TRx4 TRx5 TRx6 Insertion Loss from HB Antenna to the respective TRX HB RF port 1710 1842 1960 1970 2017 2140 2170 2350 2593 2690 3500 -0.6 -0.63 -0.64 -0.66 -0.64 -0.71 -0.66 -0.71 -0.73 -0.78 -0.75 -0.84 -0.72 -0.78 -0.81 -0.92 -0.85 -0.96 -0.72 -0.79 -0.83 -0.93 -0.86 -0.96 -0.76 -0.82 -0.87 -0.99 -0.9 -1 -0.82 -0.9 -0.97 -1.2 -1 -1.1 -0.86 -0.93 -1 -1.2 -1 -1.2 -0.99 -1.1 -1.2 -1.5 -1.2 -1.4 -0.92 -0.99 -1.1 -1.4 -1.2 -1.4 -0.89 -0.96 -1.1 -1.4 -1.1 -1.3 -0.98 -0.95 -1 -1.1 -0.95 -1.1 Insertion Loss TRx HB paths 0 1.428 GHz 1.99 GHz 3.5 GHz -0.6416 dB -0.8803 dB -0.9546 dB Insertion Loss (dB) -5 1.805 GHz -0.7132 dB 3.6 GHz -0.9769 dB 3.8 GHz -1.081 dB -10 -15 -20 0.0003 Figure 21 2.69 GHz -1.123 dB DB(|S(3,1)|) TRX1 DB(|S(3,1)|) TRX3 DB(|S(3,1)|) TRX5 DB(|S(3,1)|) TRX2 DB(|S(3,1)|) TRX4 DB(|S(3,1)|) TRX6 4 6 8 Frequency (GHz) Forward transmission from HB Antenna to the respective TRX HB RF port Application Note AN384 2 21 10 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 4.2.2 Insertion Loss TX HB port Table 12 Insertion Loss from HB Antenna to the respective TX HB RF Frequency (MHz) 1710 1842 1960 1970 2017 2140 2170 2350 2593 2690 3500 TRx1 -1.7 -1.5 -1.4 -1.4 -1.5 - - - - - - Insertion Loss Tx HB port 0 Insertion Loss (dB) -10 1.71 GHz -1.663 dB -20 5.5115 GHz -46.93 dB 1.91 GHz -1.442 dB 3.5008 GHz -41.6 dB -30 -40 -50 -60 0.0003 Figure 22 2 4 6 Frequency (GHz) 8 10 Forward transmission from HB Antenna to the respective TX HB RF port Application Note AN384 22 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 4.2.3 Return Loss from HB Antenna to the respective TRX HB RF Port Table 13 Frequency (MHz) TRx1 TRx2 TRx3 TRx4 TRx5 TRx6 Return Loss from HB Antenna to the respective TRX HB RF port 1710 1842 1960 1970 2017 2140 2170 2350 2593 2690 3500 -27.8 -24.3 -23.4 -21.4 -19.5 -17.5 -20 -18.1 -17.2 -15.7 -15.3 -14 -16.6 -15.3 -14.3 -12.6 -13.1 -12 -16.5 -15.2 -14.2 -12.5 -13 -11.9 -15.6 -14.5 -13.4 -11.6 -12.4 -11.3 -14.2 -13.2 -12 -10 -11.1 -10.2 -14 -13 -11.7 -10 -10.9 -10 -13.5 -12.7 -11.1 -10 -10.2 -10 -15 -14.1 -12 -10 -10.5 -10 -16.6 -15.6 -13.1 -10 -11 -10 -15.6 -20.3 -23.4 -19.4 -19.5 -14.9 ANT Return Loss all HB ports 0 Return Loss (dB) -10 -20 TRx1 TRx4 -40 TRx2 TRx5 -50 TRx3 Trx6 -30 -60 0.0003 2 4 6 Frequency (GHz) 8 Figure 23 Return Loss from HB Antenna to the respective TRX HB RF port 4.2.4 Return Loss of HB TRX RF Ports Table 14 Frequency (MHz) TRx1 TRx2 TRx3 TRx4 TRx5 TRx6 10 Return Loss from HB TRX RF ports to HB Antenna 1710 1842 1960 1970 2017 2140 2170 2350 2593 2690 3500 -40.6 -25.8 -27.5 -24.6 -20.5 -18.2 -22.7 -19.4 -19.1 -17 -16.4 -14.7 -18.3 -16.4 -15.6 -13.4 -14 -12.6 -18.1 -16.2 -15.4 -13.1 -13.9 -12.5 -17.1 -15.4 -14.5 -12.2 -13.3 -11.9 -15.5 -14.2 -13 -10.4 -12.1 -10.8 -15.2 -13.9 -12.6 -10 -11.8 -10.5 -14.4 -13.3 -11.7 -10 -11 -10 -17.4 -15.6 -13.1 -10 -11.8 -10.2 -20.2 -17.5 -14.4 -10 -12.5 -10.7 -14.5 -18.2 -17.7 -13.1 -24.4 -18.1 Application Note AN384 23 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 Port Return Loss all HB ports 0 Return Loss (dB) -10 -20 -30 -40 -50 -60 0.0003 2 4 6 Frequency (GHz) Figure 24 Return Loss from HB TRX RF ports to HB Antenna 4.2.5 Return Loss of HB TX RF Port Table 15 Frequency (MHz) ANTHB TX HB TRx1 TRx4 TRx2 TRx5 TRx3 TRX6 8 10 Return Loss of HB TX RF port 1710 1842 1960 1970 2017 2140 2170 2350 2593 2690 3500 -20.1 -24.5 -23.7 -16.1 -17 -14.5 -16.6 -14.2 -14.5 -12.9 - - - - - - Return Loss TX HB 10 Return Loss (dB) 0 2.17 GHz -8.428 dB -10 -20 Antenna HB TX HB -30 0.0003 Figure 25 2 4 6 Frequency (GHz) 8 10 Return Loss of HB TX RF port Application Note AN384 24 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 4.2.6 Antenna to port and Port to Port Isolation HB path Apply to the Table 16 and Table 17 on the next page. Table 16 Frequency (GHz) 0.704 0.716 0.74 0.751 0.824 0.881 0.915 0.942 1.71 1.842 1.96 1.97 2.017 2.14 2.17 2.35 2.593 2.69 3.5 1 Worst case Antenna to Port Isolation High Band part1 TX HB active ANTHB ANTHB TRX1 TX LB -39 -39 -39 -39 -38 -37 -37 -37 -31 -30 -29 -29 -29 -30 -30 -33 -50 -46 -26 -41 -41 -41 -40 -38 -37 -36 -36 -39 -39 -40 -39 -40 -40 -41 -35 -33 -32 -32 TRX1 active ANTHB ANTHB TRX2 TX HB -35 -34 -34 -34 -33 -33 -32 -32 -29 -29 -28 -28 -28 -27 -27 -26 -25 -24 -22 -45 -45 -45 -45 -44 -43 -43 -43 -37 -37 -38 -38 -38 -39 -40 -39 -40 -40 -44 TRX2 active ANTHB ANTHB TRX3 TRX1 -35 -35 -34 -34 -33 -33 -33 -32 -29 -28 -28 -28 -28 -27 -27 -26 -25 -24 -22 -37 -37 -36 -36 -36 -35 -35 -35 -31 -31 -30 -30 -30 -29 -29 -28 -26 -26 -26 TRX3 active ANTHB ANTHB TRX4 TRX2 -34 -34 -34 -34 -33 -33 -32 -32 -29 -29 -29 -29 -29 -28 -28 -27 -26 -25 -20 -33 -33 -32 -32 -32 -31 -31 -31 -27 -27 -26 -26 -26 -26 -26 -25 -23 -23 -20 TRX4 active ANTHB ANTHB TRX5 TRX3 -41 -41 -40 -40 -39 -38 -38 -38 -31 -30 -30 -30 -30 -29 -29 -29 -28 -28 -23 -34 -34 -34 -33 -33 -32 -32 -32 -29 -28 -28 -28 -28 -28 -28 -28 -26 -26 -21 TRX5 active ANTHB ANTHB TRX6 TRX4 -43 -42 -42 -42 -40 -39 -38 -38 -29 -28 -27 -27 -26 -26 -25 -24 -23 -22 -18 Worst case isolation: Isolation between neighbor port of the active port, any other port have better (higher) Isolation Application Note AN384 25 Revision 1.0, 2015-10-03 -38 -37 -37 -37 -36 -36 -35 -35 -32 -32 -31 -31 -31 -31 -31 -30 -28 -27 -23 TRX6 active ANTHB ANTHB ANT LB TRX5 -43 -43 -43 -43 -42 -41 -40 -40 -39 -40 -44 -45 -48 -47 -42 -26 -31 -32 -32 -38 -38 -38 -38 -37 -37 -36 -36 -31 -30 -30 -30 -30 -29 -29 -28 -26 -25 -21 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 Table 17 Frequency (GHz) 0.704 0.716 0.74 0.751 0.824 0.881 0.915 0.942 1.71 1.842 1.96 1.97 2.017 2.14 2.17 2.35 2.593 2.69 3.5 1 Worst case Port to Port Isolation High Band part1 TX HB active TX HB TX HB TRX1 TX LB TRX1 active TRX1 TRX1 TRX2 TX HB TRX2 active TRX2 TRX2 TRX3 TRX1 TRX3 active TRX3 TRX3 TRX4 TRX2 TRX4 active TRX4 TRX4 TRX5 TRX3 TRX5 active TRX5 TRX5 TRX6 TRX4 -37.3 -37.2 -36.9 -37 -36.3 -35.8 -35.4 -35.3 -30.3 -29.3 -28.5 -28.5 -28.3 -28.4 -28.6 -31 -35.5 -38.1 -42.7 -33.1 -32.9 -32.6 -32.6 -32 -31.5 -31.3 -31.2 -25.8 -24.8 -24.1 -24 -23.7 -22.9 -22.7 -21.7 -20.4 -19.9 -19.6 -33.2 -33 -32.7 -32.6 -32 -31.5 -31.2 -31 -25.3 -24.4 -23.6 -23.5 -23.2 -22.3 -22.2 -21.1 -19.8 -19.4 -18.5 -32.9 -32.7 -32.6 -32.5 -31.8 -31.3 -31.2 -30.9 -26 -25.1 -24.4 -24.4 -24.1 -23.3 -23.1 -21.9 -20.3 -19.6 -17.7 -38.8 -38.7 -38.4 -38.2 -37.2 -36.6 -36.3 -36 -28.4 -27.5 -26.8 -26.7 -26.4 -25.6 -25.6 -24.7 -23.6 -23.2 -21.1 -41.5 -41.4 -41.1 -40.8 -39.5 -38.4 -37.9 -37.4 -28 -27 -26.1 -26 -25.7 -24.9 -24.8 -23.8 -22.4 -22 -18.8 -34 -33.8 -33.6 -33.6 -33 -32.5 -32.3 -32 -38.5 -38.6 -38.2 -38.4 -38.6 -38.7 -38.6 -35.6 -35.5 -35.3 -31.1 -39.3 -39.2 -39.1 -38.9 -38.1 -37.6 -37.3 -37 -31.3 -31.6 -32.3 -32.3 -32.8 -33.9 -34.3 -37.4 -39.1 -39.9 -45.6 -35 -35 -34.7 -34.5 -34 -33.5 -33.2 -33 -27.3 -26.5 -25.6 -25.5 -25.2 -24.4 -24.2 -23.3 -21.9 -21.5 -20.9 -31.6 -31.5 -31.2 -31.2 -30.6 -30.1 -29.9 -29.7 -24.2 -23.2 -22.4 -22.3 -22 -21.2 -21 -20 -18.6 -18.2 -17.9 -32.9 -32.7 -32.6 -32.4 -31.8 -31.4 -31.1 -30.8 -25.3 -24.4 -23.7 -23.6 -23.3 -22.5 -22.4 -21.3 -19.9 -19.4 -18.4 Worst case isolation: Isolation between neighbor port of the active port, any other port have better (higher) Isolation Application Note AN384 26 Revision 1.0, 2015-10-03 -35.6 -35.4 -35.2 -34.9 -34.5 -33.9 -33.7 -33.4 -28.1 -27.3 -26.6 -26.4 -26.2 -25.4 -25.2 -24 -22.4 -21.8 -19.6 TRX6 active TRX6 ANT TRX6 LB TRX5 -49.1 -49.1 -48.8 -47.6 -46.6 -44.9 -44.1 -43.4 -41.7 -42.8 -46.2 -47.2 -50.9 -49.8 -44.6 -28.4 -33.1 -34.4 -33.3 -36.1 -36.1 -36.1 -35.5 -34.9 -34.6 -34.1 -34 -27.3 -26.3 -25.4 -25.3 -24.9 -24.1 -23.9 -22.7 -21.5 -21 -18.7 Antenna Switch Module with integrated MIPI RFFE Interface Small Signal Characteristics of BGSF1717MN26 Isolation ANT to HB paths 0 Isolation (dB) -20 -40 -60 -80 TRx1 to ANTHB HB active TRx3 to ANThB TRx2 active TRx5 to ANT HB TRx4 active ANTLB to ANTHB TRx6 active TxLB to ANTHB HLB active TRX1 to ANTHB TRX2 active TRx3 to ANTHB TRx4 active TRx5 to ANTHB TRx6 active TRx2 to ANT HB TRx1 active TRx4 to ANTHB TRx3 active TRx6 to ANTHB TRx5 active TxLB to ANTHB TRX1 active TRx2 to ANTHB TRx3 active TRx4 to ANTHB TRx5 active -100 0.0003 Figure 26 2 4 6 Frequency (GHz) 8 10 Worst case Antenna to Port Isolation High Band part1 Isolation HB paths to HB paths 0 Isolation (dB) -20 -40 -60 -80 -100 TRx1 to TxHB HB active TxLB to TRx1 TRX1 active TRx4 to TRx3 TRx3 active TRx3 to TRx4 TRx4 active ANTLB to TRx6 TRx6 active TxLB to TxHB HB active TRx3 toTRx2 TRx2 active TRx2 toTRx3 TRx3 active TRx6 to TRx5 TRx5 active TRx5 to TRx6 TRx6 active TRx2 to TRx1 TRx1 active TRX1 to TRX2 TRX2 active TRx5 to TRx4 TRx4 active TRx4 to TRx5 TRx5 active -120 0.0003 Figure 27 2 4 6 Frequency (GHz) Worst case Port to Port Isolation High Band part1 8 10 Worst case isolation: Isolation between neighbor port of the active port, any other port have better (higher) Isolation 1 Application Note AN384 27 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Non-Linear performance of BGSF1717MN26 5 Non-Linear performance of BGSF1717MN26 Smart phones today can operate across several cellular bands covering GSM / EDGE / CDMA / UMTS / WCDMA / LTE/TD-SCDMA / TD-LTE / LTE-A. The design of the RF front-end part in modern cellular phones is becoming increasingly complex and demanding due to the increasing number of frequency bands and modes that the phone needs to support. One of the main components of the RF front-end is the antenna switch that selects which transmitter (TX)/receiver (RX) path can be connected to the antenna. The RF switch has to satisfy high linearity requirements. The following material describes some of the main challenges of antenna switches in mobile applications. Modern smartphones are multi-mode devices that are capable of connecting to 2G, 3G and 4G networks. These networks often use different frequency bands. The smartphone’s RF frontend must therefore include band-specific components. In order to appropriately route signals for a given mode and band of operation, a high-performance RF switch is an essential component of the front-end circuitry. The performance requirements of the RF switch are discussed in the following sections. 5.1 Intermodulation Intermodulation Distortion (IMD2 and IMD3) is a parameter that describes the linearity of a device under multi-tone conditions. The intermodulation between different frequency components generates undesired output frequencies at the sum and difference frequencies of the input tones, and at multiples of those sum and difference frequencies. Some of these possible intermodulation scenarios are shown in the Figure 28. In this example, the transmitted (Tx) signal from the main antenna is coupled into the diversity antenna with high power. This signal (20 dBm) and a received jammer signal (-15 dBm) are entering the switch. Certain combinations of the TX and jammer frequencies are producing second- and third-order intermodulation products that fall into the desired reception band, and reduce the sensitivity of the receiver. In Table 18 and Table 20 test conditions Band I and V and the linearity specifications for an undisturbed communication are given. Application Note AN384 28 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Non-Linear performance of BGSF1717MN26 Low Band Main HB LB BT WLAN Navigation Wifi FM High Band CB Radio TV ... diversity PA PA PA Rx1 Tx1 Txn Rxn Rx1 Figure 28 Block diagram of RF Switch intermodulation 5.1.1 Intermodulation Measurement Setup Rxn Rx2/3 Load -20dB -6 dB IMD Product reference Plane Tx Signal Generator Power Amplifier Circulator Blocker Signal Duplexer Tunable Bandpass Filter -3 dB ANT Phase Shifter / Delay Line DUT Tx -6dB* -20dB ANT Tunable Bandpass Filter Signal Generator Rx Signal Analyzer Figure 29 -6 dB Power reference plane regarding Specification Intermodulation Measurement Test Setup The test setup for the IMD measurements has to provide a very high isolation between RX and TX signals. As an example the test set-up for the high band is shown in the Figure 29. In practice, a laboratory-graded duplexer with an isolation of 80 dB is used. In the Figure 30 and Figure 31 the results for IMD measurements in Band I and V are given. For each distortion scenario there is a minimum and a maximum value given. This variation is caused by a phase shifter connected between the switch and the duplexer. In the test set-up a phase shifter represents a not ideal matching of the switch to a 50 Ohm load. Application Note AN384 29 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Non-Linear performance of BGSF1717MN26 5.1.2 Intermodulation Measurement conditions for Band I Table 18 Test conditions and specifications of IMD measurements Band 1 TX Test case FIN (MHz) PIN (dBm) CW IMD3 IMD2 low IMD2 high 1950 20 5.1.3 Interferer FIN (MHz) PIN (dBm) CW 1760 190 -15 4090 IMD product FIMD (MHz) 2140 Intermodulation Measurement Results for Band I IMD Band I IMD Test Set-up One (left) Tx 1950 MHz PBL = -15 dBm Rx 2140 MHz T = 25°C BGSF1717MN26 IMD2Low ANT_HB - TRX1 Blocker Vdd Min Max Min Max fb = 190 MHz PTX = 20 dBm 3,3 -110,7 -101,2 -109,66 -102,6 IMD2High ANT_HB - TRX1 Table 19 ANT_HB - TX_HB Blocker Vdd Min Max Min Max fb = 4090 MHz PTX = 20 dBm 3,3 -119,5 -115,8 -132,1 -123,4 IMD3 Figure 30 ANT_HB – TX_HB ANT_HB - TRX1 ANT_HB - TX_HB Blocker Vdd Min Max Min Max fb = 1760 MHz PTX = 20 dBm 3,3 -131,0 -127,8 -132,1 -121,7 Intermodulation measurement results for Band I Typical and maximal value of intermodulation products in dBm for Band I IMD2 Low IMD2 High IMD3 Typ. Max. Typ. Max. Typ. Max. -106,0 -101,2 -122,7 -115,8 -128,2 -121,7 Application Note AN384 30 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Non-Linear performance of BGSF1717MN26 5.1.4 Intermodulation Measurement conditions for Band V Table 20 Test conditions and specifications of IMD measurements Band 1 TX Testcase FIN (MHz) PIN (dBm) CW IMD3 IMD2 low IMD2 high 835 20 5.1.5 Interferer FIN (MHz) PIN (dBm) CW 790 45 -15 1715 IMD product FIMD (MHz) 880 Intermodulation Measurement Results for Band V IMD Band V IMD Test Set-up One (left) Tx 835 MHz PBL = -15 dBm Rx 880 MHz T = 25°C BGSF1717MN26 IMD2Low ANT_HB - TRX1 ANT_HB - TX_HB ANT_LB - TX_LB ANT_LB - TRX7 ANT_LB - TRX10 Blocker Vdd Min Max Min Max Min Max Min Max Min Max fb = 45 MHz PTX = 20 dBm 3,3 -105,7 -102,4 -103,7 -102,1 -108,9 -104,5 -106,9 -102,6 -107,4 -103,6 IMD2High ANT_HB - TRX1 ANT_HB - TX_HB ANT_LB - TX_LB ANT_LB - TRX7 ANT_LB - TRX10 Blocker Vdd Min Max Min Max Min Max Min Max Min Max fb = 790 MHz PTX = 20 dBm 3,3 -134,1 -127,8 -134,4 -127,5 -133,9 -126,3 -135,7 -128,1 -134,9 -127,8 IMD3 ANT_HB - TRX1 ANT_HB - TX_HB ANT_LB - TX_LB ANT_LB - TRX7 ANT_LB - TRX10 Blocker Vdd Min Max Min Max Min Max Min Max Min Max fb = 1715 MHz PTX = 20 dBm 3,3 -132,4 -127,6 -136,0 -129,9 -132,4 -128,5 -135,7 -125,7 -134,0 -127,2 Figure 31 Table 21 Intermodulation measurement results for Band V Typical and maximal value of intermodulation products in dBm for Band V IMD2 Low IMD2 High IMD3 Typ. Max. Typ. Max. Typ. Max. -104,8 -102,4 -131,1 -126,3 -130,9 -125,7 Application Note AN384 31 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Non-Linear performance of BGSF1717MN26 5.2 Harmonic Distortion Harmonic distortion is another important parameter for the characterization of an RF switch. RF switches have to withstand high RF levels, up to 36 dBm. This high RF power at the input of a switch generates harmonics of the waveform that is present. These harmonics (2nd and 3rd) can interfere with other reception bands or can cause distortion in other RF applications (GPS, WLan) within the mobile phone. Load -20dB Directional Coupler -20dB -3 dB Signal Generator Power Amplifier Circulator F = Ffundamantel Lowpass Filter Ffilter ≥ Ffundamental A measurement Pin (Ffundamental) Power meter B -3dB measurement Pout (Ffundamental) DUT Tx -10dB Signal Analyzer Highpass Filter Ffundamental << Ffilter ≤ Fharmonics Directional Coupler ANT -3 dB reference plane reference plane Pout (Fharmonic and Pin (Ffundamental) Ffundamental) Figure 32 Harmonic Generation Measurement setup 5.2.1 Harmonic Generation Measurement conditions Table 22 Harmonic Generation measurement Conditions Tx Harmonic Products FIN (MHz) PIN (dBm), 50% DC FH2(MHz) FH3 (MHz) 824 1800 20…36 TX LB port 20…27 TRX LB ports 20…36 TX HB port 20…27 TRX HB ports 1648 2472 3600 3600 The result for the harmonic generation at 824 MHZ and 1800 MHz is shown in the Figure 33 and Figure 35. The input power (Pin) is plotted on the X-Axis, and the generated harmonic amplitude is given in dBm on the Y-Axis. Application Note AN384 32 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Non-Linear performance of BGSF1717MN26 5.2.2 Harmonic Generation Measurement Results of Low Band inputs Harmonicpower [dBm] TX_LB H2/H3 @ 824 MHz -50 -60 -70 -80 -90 -100 -110 TX_LB H2 TX_LB H3 20 22 24 26 28 30 32 34 36 Inputpower [dBm] TX7-12 H2 @ 824 MHz Harmonicpower [dBm] -70 -75 TX7 -80 TX8 -85 TX9 TX10 -90 TX11 TX12 -95 20 21 22 23 24 25 26 27 Inputpower [dBm] TRX7-12 H3 @ 824 MHz Harmonicpower [dBm] -70 -80 TX7 -90 TX8 -100 TX9 TX10 -110 TX11 -120 TX12 20 21 22 23 24 25 26 27 Inputpower [dBm] Figure 33 Measurements of Harmonic power over Carrier power of Low-Band inputs to LB Antenna Application Note AN384 33 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Non-Linear performance of BGSF1717MN26 TX10 H2/H3 @ (Band 17 FDD) 710 MHz Harmonicpower [dBm] -65 -75 -85 -95 H2 -105 H3 -115 -125 20 22 24 26 Inputpower [dBm] Figure 34 Harmonic power measurements of high linear LB input TRX10 over the Band 17 carrier In Figure 34 the generated harmonic power of a very high linear input TX10 is shown measured at the operating frequency of Band 17 FDD (710 MHz). The spacing between the carrier frequency and the generated harmonic at the maximum operated power sets up to 98 dBc for H2 and 133 dBc for H3. This is an outstanding performance among other competitors. Application Note AN384 34 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Non-Linear performance of BGSF1717MN26 5.2.3 Harmonic Generation Measurement Results of High Band inputs Harmonicpower [dBm] TX_HB H3 @ 1800 MHz -65 -75 -85 -95 TX_HB H3 -105 TX_HB H2 -115 -125 20 22 24 26 28 30 32 34 36 Inputpower [dBm] TRX1-6 H2 @ 1800 MHz Harmonicpower [dBm] -80 -85 TX1 -90 TX2 -95 TX3 -100 TX4 -105 TX5 TX6 -110 20 21 22 23 24 25 26 27 Inputpower [dBm] TRX1-6 H3 @ 1800 MHz Harmonicpower [dBm] -70 -75 -80 TX1 -85 TX2 -90 TX3 -95 -100 TX4 -105 TX5 -110 TX6 20 21 22 23 24 25 26 27 Inputpower [dBm] Figure 35 Measurements of Harmonic power over Carrier power of High-Band inputs to HB Antenna Application Note AN384 35 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Switching time 6 Switching time Table 23 Switching time values Parameter Symbol Values Min. Typ. Max. Unit Note / Test Conditions Switching Time On/Off ton/off - 1 - µs 10% ON to 90% ON; 90% OFF to 10% OFF Boost Converter Settling Time tBC - - 25 µs After power down mode For a “switching time” measurement a signal generator and a digital oscilloscope is used. A 100 MHz continuous sine signal with 0 dBm signal level was switched to all LB and HB inputs one after another. The output of the switch connected from one side either to HB Antenna or to LB Antenna and from the other side to a digital oscilloscope. Typical time required to raise the signal power from 10% ON Mode up to 90 % ON of the Signal Level lies by 1 µs. In the Figure 36 the switching time of the TX_LB input is shown. Maximum time required between switch power-up till being able to switch to desired RF-path is 25 µs. Figure 36 Switching time measurements of the TX_LB input to the LB Antenna Application Note AN384 36 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Appendix: Switch Controller Unit 7 Appendix: Switch Controller Unit The BGSF1717MN26 is controlled via MIPI interface and Infineon offers a MIPI-Controller unit to ease the evaluation of its BGSF1717MN26 on application board. The unit is very simple to use with a few buttons to select the right device and different states. This section helps as a short user guide for the controller unit shown in Figure 37. The controller unit requires a DC supply of 5.5V with a current capability of ~50mA. G VG N CN D CD I/F Cable to BGSF1717MN26 to BGSF18D P3 P2 GND GND Vcc LVdd FRM GND GND NC SPI CLK Figure 37 Switch Controller Unit Board 7.1 Operating Guide P1 Please observe the following steps to use the controller unit: 1. Connect evaluation board and control unit via controller cable 2. Connect control unit to power supply 3. Press P1 and P3 simultaneously until desired switch type is displayed - “77” for BGSF1717MN26 4. Press P1 or P3 to enable active mode “PU” is displayed * 5. Press P1 or P3 to alter switch state - IS … Isolation Mode (all channels off) - PD … Power Down Mode (low current consumption) - PU ... Power Up Mode (active mode) - T1 – TC and LB, HB ... TRX1 – TRX12 and TX LB and TXHB are enabled Application Note AN384 37 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Appendix: Switch Controller Unit 7.2 Table 24 Display Settings of the Controller Unit Setting Display of Active RF Path, Power UP, Power Down and Isolation State LED Display Application Note AN384 State of BGSF1717MN26 T1 TRX1 T2 TRX2 T3 TRX3 T4 TRX4 T5 TRX5 T6 TRX6 T7 TRX7 T8 TRX8 T9 TRX9 TA TRX10 TB TRX11 TC TRX12 LB TX LB HB TX LB IS Isolation State PU Power Up State PD Power Down State 38 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Authors 8 Authors Andre Dewai, Senior Application Engineer of the Business Unit “RF and Sensors” Sergey Karpov, Application Engineer of the Business Unit “RF and Sensors” Application Note AN384 39 Revision 1.0, 2015-10-03 Antenna Switch Module with integrated MIPI RFFE Interface Authors Remark 1) The graphs are generated with the simulation program AWR Microwave Office®. Revision History Major changes since the last revision Page or Reference Description of change st This is 1 version (Rev. 1.0) Application Note AN384 40 Revision 1.0, 2015-10-03 Trademarks of Infineon Technologies AG AURIX™, C166™, CanPAK™, CIPOS™, CIPURSE™, CoolGaN™, CoolMOS™, CoolSET™, CoolSiC™, CORECONTROL™, CROSSAVE™, DAVE™, DI-POL™, DrBLADE™, EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPACK™, EconoPIM™, EiceDRIVER™, eupec™, FCOS™, HITFET™, HybridPACK™, ISOFACE™, IsoPACK™, iWafer™, MIPAQ™, ModSTACK™, my-d™, NovalithIC™, OmniTune™, OPTIGA™, OptiMOS™, ORIGA™, POWERCODE™, PRIMARION™, PrimePACK™, PrimeSTACK™, PROFET™, PRO-SIL™, RASIC™, REAL3™, ReverSave™, SatRIC™, SIEGET™, SIPMOS™, SmartLEWIS™, SOLID FLASH™, SPOC™, TEMPFET™, thinQ!™, TRENCHSTOP™, TriCore™. Other Trademarks Advance Design System™ (ADS) of Agilent Technologies, AMBA™, ARM™, MULTI-ICE™, KEIL™, PRIMECELL™, REALVIEW™, THUMB™, µVision™ of ARM Limited, UK. ANSI™ of American National Standards Institute. AUTOSAR™ of AUTOSAR development partnership. Bluetooth™ of Bluetooth SIG Inc. CATiq™ of DECT Forum. COLOSSUS™, FirstGPS™ of Trimble Navigation Ltd. EMV™ of EMVCo, LLC (Visa Holdings Inc.). EPCOS™ of Epcos AG. FLEXGO™ of Microsoft Corporation. HYPERTERMINAL™ of Hilgraeve Incorporated. MCS™ of Intel Corp. IEC™ of Commission Electrotechnique Internationale. IrDA™ of Infrared Data Association Corporation. ISO™ of INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. MATLAB™ of MathWorks, Inc. MAXIM™ of Maxim Integrated Products, Inc. MICROTEC™, NUCLEUS™ of Mentor Graphics Corporation. MIPI™ of MIPI Alliance, Inc. MIPS™ of MIPS Technologies, Inc., USA. muRata™ of MURATA MANUFACTURING CO., MICROWAVE OFFICE™ (MWO) of Applied Wave Research Inc., OmniVision™ of OmniVision Technologies, Inc. Openwave™ of Openwave Systems Inc. RED HAT™ of Red Hat, Inc. RFMD™ of RF Micro Devices, Inc. SIRIUS™ of Sirius Satellite Radio Inc. SOLARIS™ of Sun Microsystems, Inc. SPANSION™ of Spansion LLC Ltd. Symbian™ of Symbian Software Limited. TAIYO YUDEN™ of Taiyo Yuden Co. TEAKLITE™ of CEVA, Inc. TEKTRONIX™ of Tektronix Inc. TOKO™ of TOKO KABUSHIKI KAISHA TA. UNIX™ of X/Open Company Limited. VERILOG™, PALLADIUM™ of Cadence Design Systems, Inc. VLYNQ™ of Texas Instruments Incorporated. VXWORKS™, WIND RIVER™ of WIND RIVER SYSTEMS, INC. ZETEX™ of Diodes Zetex Limited. Last Trademarks Update 2014-07-17 www.infineon.com Edition 2015-10-03 Published by Infineon Technologies AG 81726 Munich, Germany © 2016 Infineon Technologies AG. All Rights Reserved. Do you have a question about any aspect of this document? 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