B G M10 43 N7 Low -N ois e Fr ont -E nd Mo dule for G loba l Na vig atio n S atelli te S ys te m s (G N SS ) Applic atio n Usi ng 0 201 Co m p onents Applic atio n N ote A N 286 Revision: Rev. 1.0 2012-06-27 RF and P r otecti on D evic es Edition 2012-06-27 Published by Infineon Technologies AG 81726 Munich, Germany © 2012 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Application Note AN286 Revision History: 2012-06-27 Previous Revision: None Page Subjects (major changes since last revision) Trademarks of Infineon Technologies AG AURIX™, C166™, CanPAK™, CIPOS™, CIPURSE™, EconoPACK™, CoolMOS™, CoolSET™, CORECONTROL™, CROSSAVE™, DAVE™, DI-POL™, EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPIM™, EconoPACK™, EiceDRIVER™, eupec™, FCOS™, HITFET™, HybridPACK™, I²RF™, ISOFACE™, IsoPACK™, MIPAQ™, ModSTACK™, my-d™, NovalithIC™, OptiMOS™, ORIGA™, POWERCODE™, PRIMARION™, PrimePACK™, PrimeSTACK™, PRO-SIL™, PROFET™, RASIC™, ReverSave™, SatRIC™, SIEGET™, SINDRION™, SIPMOS™, SmartLEWIS™, SOLID FLASH™, 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. AUTOSAR™ is licensed by AUTOSAR development partnership. Bluetooth™ of Bluetooth SIG Inc. CAT-iq™ of DECT Forum. COLOSSUS™, FirstGPS™ of Trimble Navigation Ltd. EMV™ of EMVCo, LLC (Visa Holdings Inc.). EPCOS™ of Epcos AG. FLEXGO™ of Microsoft Corporation. FlexRay™ is licensed by FlexRay Consortium. HYPERTERMINAL™ of Hilgraeve Incorporated. 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™ Openwave Systems Inc. RED HAT™ Red Hat, Inc. RFMD™ 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 2011-11-11 Application Note AN286, Rev. 1.0 3 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications List of Content, Figures and Tables Table of Content 1 BGM1043N7 GPS and GLONASS Front-End Module ..................................................................... 5 2 Introduction ........................................................................................................................................ 6 3 Description .......................................................................................................................................... 8 4 Application Circuit and Block Diagram ........................................................................................... 9 5 Measurement Results ...................................................................................................................... 10 6 Measured Graphs for GPS and GLONASS Bands ........................................................................ 12 7 Miscellaneous Measured Graphs ................................................................................................... 18 8 Evaluation Board and Layout Information .................................................................................... 21 9 Authors .............................................................................................................................................. 22 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 BGM1043N7 in TSNP-7-10 Package................................................................................................... 5 RF System Overview: Mobile Phone ................................................................................................... 6 GNSS system with integrated GNSS FEM BGM1043N7 for mobile/portable and personal navigation devices ................................................................................................................................................. 7 Block Diagram of BGM1043N7 ............................................................................................................ 8 Schematic diagram of the BGM1043N7 application circuit .................................................................. 9 Wideband Insertion Power Gain of BGM1043N7 .............................................................................. 12 Narrowband Insertion Power Gain of BGM1043N7 for GPS and GLONASS bands ......................... 12 Input Matching of BGM1043N7 for GPS and GLONASS bands ....................................................... 13 Output Matching of BGM1043N7 for GPS and GLONASS bands ..................................................... 13 Reverse Isolation of BGM1043N7 for GPS and GLONASS bands ................................................... 14 Noise Figure of BGM1043N7 for GPS and GLONASS bands ........................................................... 14 Input 1dB Compression Point of BGM1043N7 at supply voltage of 1.8V for GPS and GLONASS bands .................................................................................................................................................. 15 Input 1dB Compression Point of BGM1043N7 at supply voltage of 2.8V for GPS and GLONASS bands .................................................................................................................................................. 15 Carrier and intermodulation products of BGM1043N7 for GPS band at Vcc=1.8V ........................... 16 Carrier and intermodulation products of BGM1043N7 for GPS band at Vcc=2.8V ........................... 16 Carrier and intermodulation products of BGM1043N7 for GLONASS band at Vcc=1.8V ................. 17 Carrier and intermodulation products of BGM1043N7 for GLONASS band at Vcc=2.8V ................. 17 Input and Output Matching of BGM1043N7 for GPS and GLONASS bands with Vcc=1.8V ............ 18 Input and Output Matching of BGM1043N7 for GPS and GLONASS bands with Vcc=2.8V ............ 18 Stability Factor K of BGM1043N7 upto 10 GHz ................................................................................. 19 Stability Factor µ1 of BGM1043N7 upto 10 GHz ............................................................................... 19 Stability Factor µ2 of BGM1043N7 upto 10 GHz ............................................................................... 20 Picture of Evaluation Board BGM1043N7 V3.0 ................................................................................. 21 PCB Layer Information ....................................................................................................................... 21 List of Tables Table 1 Table 2 Table 3 Table 4 Pin Assignment of BGM1043N7 .......................................................................................................... 9 Bill-of-Materials..................................................................................................................................... 9 Electrical Characteristics (at room temperature), Vcc = Vpon = 1.8 V .............................................. 10 Electrical Characteristics (at room temperature), Vcc = Vpon = 2.8 V .............................................. 11 Application Note AN286, Rev. 1.0 4 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications BGM1043N7 GPS and GLONASS Front-End Module 1 BGM1043N7 GPS and GLONASS Front-End Module 1.1 Features 1.2 Operating frequency: 1575.42 MHz and 1598.061605.38 MHz High Gain: 15.1 dB Low Noise Figure (GPS): 1.5 dB Low current consumption: 4.0 mA Out-of-band rejection in cellular bands: > 43 dBc Input compression point in cellular bands: 30 dBm Supply voltage: 1.5 V to 3.6 V 3 Tiny TSNP-7-10 leadless package (2.3 x 1.7 x 0.73 mm ) RF output internally matched to 50 Ω IEC ESD contact discharge of RF input pin: 6 kV Only 3 external SMD parts RoHS compliant package (Pb-free) Figure 1 BGM1043N7 in TSNP-7-10 Package Applications - GPS (Global Positioning System) working in the L1 band at 1575.42 MHz - GLONASS (Globalnaya Navigatsionnaya Sputnikovaya Sistema) working in the L1 band from 1598.06 MHz to 1605.38 MHz Application Note AN286, Rev. 1.0 5 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Introduction 2 Introduction Global Navigation Satellite System or GNSS receiver, as we know, works on the reception of location based information from satellite signals. There are several standards worldwide like GPS, GLONASS, Galileo and COMPASS Bei Du. However, the power levels of the satellite signals received, can be lower than -130 dBm. This poses a challenge on the sensitivity of the GNSS receiver. Along with this, the ever growing disturbing or jamming signals in the adjacent cellular bands makes the design of the receiver front-end even more difficult. The rapidly growing market for GNSS systems is driving the design of advanced and high-performance GNSS receivers. A simple overview of the GNSS RF system in a mobile phone or other handheld devices is shown in Figure 2. Mobile Phone / Handheld device Satellite GNSS signal Tranceiver module GSM800/GSM900/ DCS/PCS1800/ UMTS/ WLAN GNSS Receiver IC Figure 2 Int. LNA Tx Signal GNSS Signal < -130dBm GNSS RF Front-end module ESD protection Blocking Signal RF System Overview: Mobile Phone GNSS receivers for mobile or handheld applications are always under the threat of high power cellular signals. Due to the coexistence of GNSS and Cellular services, there is a strong coupling of the DCS/PCS and Cellular signals to the GNSS receiver. The performance of a standard integrated GNSS receiver chip cannot meet the specifications required for the present systems. An external RF front-end is essential to achieve this required performance. The most important prerequisites for the front-end of a GNSS receiver are low noise figure and sufficient amplification of the desired signal together with high attenuation of the jamming signals. Application Note AN286, Rev. 1.0 6 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications 2.1 Systems overview of a GNSS receiver Several configurations can be adopted for a GNSS receiver chain. In all configurations, as mentioned earlier, a RF front-end like BGM1043N7 is placed between the antenna and the GNSS receiver chip. Mobile/portable devices as well as personal navigation devices request decreasing form factor used by the implementation of the GNSS function in the devices. BGM1043N7 supports the designers to minimize the area in the front-end. Such a configuration is shown in Figure 3. The BGM1043N7 can also be used for the active antenna module. Embedded ANT BGM1043N7 LNA BPF GNSS Receiver IC Figure 3 GNSS system with integrated GNSS FEM BGM1043N7 for mobile/portable and personal navigation devices Application Note AN286, Rev. 1.0 7 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Description 3 Description The BGM1043N7 is a combination of a low-insertion-loss pre-filter with Infineon’s high performance low noise amplifier (LNA) for Global Positioning System (GPS) and Globalnaya Navigatsionnaya Sputnikovaya Sistema (GLONASS) applications. Both, GPS and GLONASS frequency bands, can be used at the same time. Through the low insertion loss of the filter, the BGM1043N7 provides 15.1 dB gain, 1.5 dB noise figure and high linearity performance. In addition BGM1043N7 provides very high out-of-band attenuation in conjunction with a high input compression point. It can withstand IEC61000-4-2 ESD contact discharge at the RF input as high as 6 kV in the application circuit shown in Figure 5. Its current consumption is as low as 4.0 mA. It operates over the 1.5 V to 3.6 V supply voltage range. Figure 4 Block Diagram of BGM1043N7 Application Note AN286, Rev. 1.0 8 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Application Circuit and Block Diagram 4 Application Circuit and Block Diagram The BGM1043N7 is internally matched at the output to 50 Ohm. The LNA bias circuitry is also integrated on chip. Therefore, only three external components are required in the application. The application schematic is shown in Figure 5 and the function of the external passives is listed in Table 2. 4.1 Application Schematic L1 9.1nH BGM1043N7 (Topview) L2 7.5nH SO 4 RFIN 3 5 7 GND 2 PON AI 6 RFOUT 1 VCC C1 1µF Figure 5 Table 1 Schematic diagram of the BGM1043N7 application circuit Pin Assignment of BGM1043N7 Pin No. Symbol Function 1 VCC Power Supply 2 PON Power ON/OFF 3 RFIN RF Input 4 SO Pre-Filter Output 5 AI LNA Input 6 RFOUT RF Output 7 GND DC and RF ground Table 2 Bill-of-Materials Symbol Value Unit Size C1 L1 1.0 µF 0201 Various Supply filtering 9.1 nH 0201 Murata LQP Series Matching/ESD protection Inductor L2 7.5 nH 0201 Murata LQP Series Matching Inductor Q1 BGM1043N7 TSNP-7-10 Infineon GPS/GLONASS FEM Application Note AN286, Rev. 1.0 Manufacturer 9 / 23 Comment 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Measurement Results 5 Measurement Results Measurement results of the BGM1043N7 are presented in this section. The measurements are performed on the Infineon application board at room temperature. The performances of the BGM1043N7 are here provided for the voltage of 1.8V (Table 3) and 2.8V (Table 4). The data exclude PCB and SMA connector losses, unless otherwise mentioned. Table 3 Electrical Characteristics (at room temperature), Vcc = Vpon = 1.8 V Parameter Symbol Value Unit Comment/Test Condition DC Voltage Vcc 1.8 V DC Current Icc 3.9 mA Navigation System Sys GPS GLONASS Frequency Range Freq 1575.42 1598-1606 MHz Gain G 14.7 14.1 dB Noise Figure NF 1.64 1.96 dB RLin 14.2 15.6 dB RLout 26.8 27.2 dB IRev 21.6 22.2 dB Input P1dB IP1dB -8.9 -7.7 dBm Output P1dB OP1dB 4.8 5.4 dBm Input IP3 In-band IIP3 -6.82 -5.59 dBm Output IP3 In-band OIP3 7.88 8.51 f1gps = 1575 MHz, f2gps = 1576MHz dBm f1GLONASS =1602 MHz, f2GLONASS =1603 MHz P1IN = P2IN = -30 dBm Input Return Loss Output Return Loss Reverse Isolation PCB and SMA connectors of 0.12 dB losses substracted fgps = 1575.42 MHz f GLONASS = 1605 MHz Rejection 750MHz1) Rej750M 52.0 dBc f = 750 MHz 1) Rej900M 49.4 dBc f = 806 MHz - 928 MHz Rejection 1800MHz1) Rej1800M 43.0 dBc f = 1710 MHz - 1980 MHz 1) Rej2400M 47.2 dBc f = 2400 MHz - 2500 MHz Input P1dB IP1dB900M 29.6 dBm f = 900 MHz Input P1dB IP1dB1710M 31.5 dBm f = 1710 MHz H2 -32.8 dBm IIP3OOB 63.3 f1 = 1712.7 MHz, f2 = 1850 MHz dBm P1IN = +10 dBm, P2IN = +10 dBm; fIIP3 = 1575.4 MHz k >1 Rejection 900MHz Rejection 2400MHz LTE band-13 2 Harmonic Input IP3 out-of-band Stability 1) nd -- fIN = 787.76 MHz, PIN = +15 dBm; fH2 = 1575.52 MHz Unconditionnally Stable from 0 to 10GHz Rejection is defined as following: [Gain at 1575.42 MHz] – [Attenuation@stopband frequency] Application Note AN286, Rev. 1.0 10 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Measurement Results Table 4 Electrical Characteristics (at room temperature), Vcc = Vpon = 2.8 V Parameter Symbol Value Unit Comment/Test Condition DC Voltage Vcc 2.8 V DC Current Icc 4.1 mA Navigation System Sys GPS GLONASS Frequency Range Freq 1575.42 1598-1606 MHz Gain G 14.8 14.3 dB Noise Figure NF 1.62 1.96 dB RLin 14.8 16.3 dB RLout 22.8 30.7 dB IRev 22.0 22.5 dB Input P1dB IP1dB -7.2 -5.1 dBm Output P1dB OP1dB 6.6 8.2 dBm IIP3 -6.77 -5.61 dBm 8.69 f1gps = 1575 MHz, f2gps = 1576MHz dBm f1GLONASS =1602 MHz, f2GLONASS =1603 MHz Input power= -30 dBm Input Return Loss Output Return Loss Reverse Isolation Input IP3 In-band Output IP3 In-band OIP3 Rejection 750MHz1) Rejection 900MHz 1) LTE band-13 2 Harmonic Input IP3 out-of-band Stability 1) Rej750M 52.0 dBc f = 750 MHz Rej900M 49.4 dBc f = 806 MHz - 928 MHz Rej1800M 43.0 dBc f = 1710 MHz - 1980 MHz 1) Rej2400M 47.2 dBc f = 2400 MHz - 2500 MHz IP1dB900M 31.1 dBm f = 900 MHz IP1dB1710M 33.2 dBm f = 1710 MHz H2 -32.9 dBm IIP3OOB 63.4 f1 = 1712.7 MHz, f2 = 1850 MHz dBm P1IN = +10 dBm, P2IN = +10 dBm; fIIP3 = 1575.4 MHz k >1 Rejection 2400MHz Input P1dB fgps = 1575.42 MHz f GLONASS = 1605 MHz 1) Rejection 1800MHz Input P1dB 8.03 PCB and SMA connectors of 0.12 dB losses substracted nd -- fIN = 787.76 MHz, PIN = +15 dBm; fH2 = 1575.52 MHz Unconditionnally Stable from 0 to 10GHz Rejection is defined as following: [Gain at 1575.42 MHz] – [Attenuation@stopband frequency] Application Note AN286, Rev. 1.0 11 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Measured Graphs for GPS and GLONASS Bands 6 Measured Graphs for GPS and GLONASS Bands Gain 20 1575.4 MHz 14.8 dB 10 Gain at Vcc=1.8V Gain at Vcc=2.8V S21 (dB) 0 -10 -20 -30 -40 787 MHz -37.4 dB -50 -60 0 Figure 6 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 Frequency (MHz) Wideband Insertion Power Gain of BGM1043N7 Narrowband gain 16 Gain at Vcc=1.8V Gain at Vcc=2.8V 15.4 S21 (dB) 1575.4 MHz 14.8 dB 14.8 1605.4 MHz 14.3 dB 1575.4 MHz 14.7 dB 14.2 1605.4 MHz 14.1 dB 13.6 13 1500 Figure 7 1525 1550 1575 1600 Frequency (MHz) 1625 1650 Narrowband Insertion Power Gain of BGM1043N7 for GPS and GLONASS bands Application Note AN286, Rev. 1.0 12 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Measured Graphs for GPS and GLONASS Bands Input matching 0 S11 at Vcc=1.8V S11 at Vcc=2.8V -5 S11 (dB) 1575.4 MHz -14.2 dB -15 -20 -25 1500 Figure 8 1605.4 MHz -15.6 dB -10 1605.4 MHz -16.3 dB 1575.4 MHz -14.8 dB 1525 1550 1575 1600 Frequency (MHz) 1625 1650 Input Matching of BGM1043N7 for GPS and GLONASS bands Output matching 0 S22 at Vcc=1.8V S22 at Vcc=2.8V -5 S22 (dB) -10 -15 1575.4 MHz -22.8 dB 1605.4 MHz -27.2 dB -20 -25 -30 1575.4 MHz -26.8 dB -35 -40 1500 Figure 9 1525 1550 1575 1600 Frequency (MHz) 1605.4 MHz -30.7 dB 1625 1650 Output Matching of BGM1043N7 for GPS and GLONASS bands Application Note AN286, Rev. 1.0 13 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Measured Graphs for GPS and GLONASS Bands Isolation -17 S12 at Vcc=1.8V S12 at Vcc=2.8V S12 (dB) -19 1575.4 MHz -21.6 dB -21 -23 1575.4 MHz -22 dB 1605.4 MHz -22.2 dB 1605.4 MHz -22.5 dB -25 -27 1500 Figure 10 1525 1550 1575 1600 Frequency (MHz) 1625 1650 Reverse Isolation of BGM1043N7 for GPS and GLONASS bands Noise figure 3 NF at Vcc=1.8V 2.8 NF at Vcc=2.8V 2.6 NF (dB) 2.4 1605.4 MHz 1.96 2.2 2 1575.4 MHz 1.64 1.8 1605.4 MHz 1.96 1.6 1575.4 MHz 1.62 1.4 1.2 1 1559 Figure 11 1567 1575 1583 1591 Frequency (MHz) 1599 1607 1615 Noise Figure of BGM1043N7 for GPS and GLONASS bands Application Note AN286, Rev. 1.0 14 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Measured Graphs for GPS and GLONASS Bands Compression point at 1dB with Vcc=1.8V 16 P1dB at Vcc=1.8V GPS (1575.42MHz) -30 dBm 14.8 dB 15 P1dB at Vcc=1.8V GLONASS (1605MHz) -8.89 dBm 13.8 dB Gain (dB) 14 -30 dBm 14.2 dB 13 -7.68 dBm 13.2 dB 12 11 10 -30 Figure 12 -25 -20 -15 Power (dBm) -10 -5 0 Input 1dB Compression Point of BGM1043N7 at supply voltage of 1.8V for GPS and GLONASS bands Compression point at 1dB with Vcc=2.8V 16 P1dB at Vcc=2.8V GPS (1575.42MHz) -30 dBm 14.9 dB P1dB at Vcc=2.8V GLONASS (1605MHz) 15 -7.15 dBm 13.9 dB -30 dBm 14.3 dB Gain (dB) 14 13 -5.08 dBm 13.3 dB 12 11 10 -30 Figure 13 -25 -20 -15 Power (dBm) -10 -5 0 Input 1dB Compression Point of BGM1043N7 at supply voltage of 2.8V for GPS and GLONASS bands Application Note AN286, Rev. 1.0 15 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Measured Graphs for GPS and GLONASS Bands Intermodulation for GPS band 0 1575 MHz -15.18 -10 1576 MHz -15.22 -20 Power (dBm) -30 -40 -50 1577 MHz -61.38 1574 MHz -62.3 -60 -70 -80 -90 -100 1573 Figure 14 1574 1575 1576 Frequency (MHz) 1577 1578 Carrier and intermodulation products of BGM1043N7 for GPS band at Vcc=1.8V Intermodulation for GPS band 0 1575 MHz -15.11 -10 1576 MHz -15.14 -20 Power (dBm) -30 -40 -50 1577 MHz -61.44 1574 MHz -62.27 -60 -70 -80 -90 -100 1573 Figure 15 1574 1575 1576 Frequency (MHz) 1577 1578 Carrier and intermodulation products of BGM1043N7 for GPS band at Vcc=2.8V Application Note AN286, Rev. 1.0 16 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Measured Graphs for GPS and GLONASS Bands Intermodulation for GLONASS band 0 1603 MHz -15.9 1602 MHz -15.86 -10 -20 Power (dBm) -30 -40 -50 1604 MHz -64.68 1601 MHz -65.44 -60 -70 -80 -90 -100 1600 Figure 16 1601 1602 1603 Frequency (MHz) 1604 1605 Carrier and intermodulation products of BGM1043N7 for GLONASS band at Vcc=1.8V Intermodulation for GLONASS band 0 1602 MHz -15.77 -10 1603 MHz -15.8 -20 Power (dBm) -30 -40 -50 1604 MHz -64.74 1601 MHz -65.39 -60 -70 -80 -90 -100 1600 Figure 17 1601 1602 1603 Frequency (MHz) 1604 1605 Carrier and intermodulation products of BGM1043N7 for GLONASS band at Vcc=2.8V Application Note AN286, Rev. 1.0 17 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Miscellaneous Measured Graphs 7 Miscellaneous Measured Graphs Swp Max 1615MHz Output 2. 0 6 0. 0.8 1.0 Input and Output matching with Vcc=1.8V Input 0. 4 0 3. 0 4. 5.0 Swp Min 1559MHz -1.0 -0.8 -0 .6 .0 -2 .4 -0 Figure 18 10.0 5.0 4.0 1575.4 MHz r 1.06 x -0.401 -3 .0 2 -0. 3.0 2.0 1.0 0.8 0.4 0.2 1605.4 MHz r 0.964 x -6.05e-005 10.0 -4 .0 -5. 0 0 1605.4 MHz r 1.26 x -0.258 -10.0 0.6 0.2 1575.4 MHz r 0.936 x 0.0808 Input and Output Matching of BGM1043N7 for GPS and GLONASS bands with Vcc=1.8V Swp Max 1615MHz Output 2. 0 6 0. 0.8 1.0 Input and Output matching with Vcc=2.8V Input 0. 4 0 3. 0 4. 5.0 10.0 .0 -2 -1.0 -0.8 -0 .6 .4 -0 Figure 19 5.0 4.0 3.0 2.0 1.0 0.6 0.4 0.8 1575.4 MHz r 1.09 x -0.379 -3 .0 2 -0. 10.0 -10.0 0 0.2 1605.4 MHz r 0.95 x 0.0445 1605.4 MHz r 1.26 x -0.223 -4 .0 -5. 0 0.2 1575.4 MHz r 0.911 x 0.121 Swp Min 1559MHz Input and Output Matching of BGM1043N7 for GPS and GLONASS bands with Vcc=2.8V Application Note AN286, Rev. 1.0 18 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Miscellaneous Measured Graphs Stability K factor 5 Stability K factor at Vcc=1.8V Stability K factor at Vcc=2.8V 4 3 2 1 1575.4 MHz 1.29 0 0 Figure 20 1000 2000 3000 4000 5000 6000 Frequency (MHz) 7000 8000 9000 10000 Stability Factor K of BGM1043N7 upto 10 GHz Stability Mu1 factor 5 Stability Mu1 factor at Vcc=1.8V Stability Mu1 factor at Vcc=2.8V 4 3 2 1575.4 MHz 1.88 1 0 0 Figure 21 1000 2000 3000 4000 5000 6000 Frequency (MHz) 7000 8000 9000 10000 Stability Factor µ1 of BGM1043N7 upto 10 GHz Application Note AN286, Rev. 1.0 19 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Miscellaneous Measured Graphs Stability Mu2 factor 3 2 1575.4 MHz 1.58 1 Stability Mu2 factor at Vcc=1.8V Stability Mu2 factor at Vcc=2.8V 0 0 Figure 22 1000 2000 3000 4000 5000 6000 Frequency (MHz) 7000 8000 9000 10000 Stability Factor µ2 of BGM1043N7 upto 10 GHz Application Note AN286, Rev. 1.0 20 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Evaluation Board and Layout Information 8 Evaluation Board and Layout Information In this application note, the following PCB is used: PCB Marking: BGM1043N7 V3.0 M120319 PCB material: FR4 Figure 23 Picture of Evaluation Board BGM1043N7 V3.0 Vias FR4, 0.2mm Copper 35µm Figure 24 FR4, 0.8mm PCB Layer Information Application Note AN286, Rev. 1.0 21 / 23 2012-06-27 BGM1043N7 Low-Noise FEM for GPS and GLONASS Applications Authors 9 Authors Jagjit Singh Bal, Senior Application Engineer of Business Unit “RF and Protection Devices” Dr. Chih-I Lin, Senior Staff Engineer of Business Unit “RF and Protection Devices” Application Note AN286, Rev. 1.0 22 / 23 2012-06-27 w w w . i n f i n e o n . c o m Published by Infineon Technologies AG AN286