B GB 7 0 7 L 7 E SD A L o w N o i s e A m p l i fi e r f o r t h e 2 .3 G Hz t o 2 . 7 GHz Ba n d u s i n g B GB 7 0 7 L 7 E SD Ap p l i c a ti o n N o te A N 1 9 5 Revision: Rev. 1.0 2010-09-25 RF a n d P r o te c ti o n D e vi c e s Edition 2010-09-25 Published by Infineon Technologies AG 81726 Munich, Germany © 2010 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. BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz Application Note AN195 Revision History: 2010-09-25 Previous Revision: prev. Rev. x.x Page Subjects (major changes since last revision) Trademarks of Infineon Technologies AG A-GOLD™, BlueMoon™, COMNEON™, CONVERGATE™, COSIC™, C166™, CROSSAVE™, CanPAK™, CIPOS™, CoolMOS™, CoolSET™, CONVERPATH™, CORECONTROL™, DAVE™, DUALFALC™, DUSLIC™, EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPACK™, EconoPIM™, E-GOLD™, EiceDRIVER™, EUPEC™, ELIC™, EPIC™, FALC™, FCOS™, FLEXISLIC™, GEMINAX™, GOLDMOS™, HITFET™, HybridPACK™, INCA™, ISAC™, ISOFACE™, IsoPACK™, IWORX™, M-GOLD™, MIPAQ™, ModSTACK™, MUSLIC™, my-d™, NovalithIC™, OCTALFALC™, OCTAT™, OmniTune™, OmniVia™, OptiMOS™, OPTIVERSE™, ORIGA™, PROFET™, PRO-SIL™, PrimePACK™, QUADFALC™, RASIC™, ReverSave™, SatRIC™, SCEPTRE™, SCOUT™, S-GOLD™, SensoNor™, SEROCCO™, SICOFI™, SIEGET™, SINDRION™, SLIC™, SMARTi™, SmartLEWIS™, SMINT™, SOCRATES™, TEMPFET™, thinQ!™, TrueNTRY™, TriCore™, TRENCHSTOP™, VINAX™, VINETIC™, VIONTIC™, WildPass™, X-GOLD™, XMM™, X-PMU™, XPOSYS™, XWAY™. Other Trademarks AMBA™, ARM™, MULTI-ICE™, PRIMECELL™, REALVIEW™, THUMB™ 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. Mifare™ of NXP. MIPI™ of MIPI Alliance, Inc. MIPS™ of MIPS Technologies, Inc., USA. muRata™ of MURATA MANUFACTURING CO. OmniVision™ of OmniVision Technologies, Inc. Openwave™ Openwave Systems Inc. RED HAT™ Red Hat, Inc. RFMD™ RF Micro Devices, Inc. SIRIUS™ of Sirius Sattelite 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 2009-10-19 Application Note AN195, Rev. 1.0 3 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz List of Content, Figures and Tables Table of Content 1 Overview ............................................................................................................................................. 5 2 2.1 2.2 2.3 LNA with wire-wound coils ............................................................................................................... 6 Summary of Measurement Results ...................................................................................................... 6 Schematic Diagram .............................................................................................................................. 7 Measured Graphs................................................................................................................................. 8 3 3.1 3.2 3.3 LNA with low-Q coils ....................................................................................................................... 12 Summary of Measurement Results .................................................................................................... 12 Schematic Diagram ............................................................................................................................ 13 Measured Graphs............................................................................................................................... 14 4 Evaluation Board .............................................................................................................................. 17 Authors .............................................................................................................................................. 18 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 Schematic diagram with wire-wound coils ........................................................................................... 7 Insertion Gain of the BGB707L7 Circuit with wire-wound inductors .................................................... 8 Input Matching of the BGB707L7 Circuit with wire-wound inductors ................................................... 8 Output Matching of the BGB707L7 Circuit with wire-wound inductors ................................................ 9 Reverse Isolation of the BGB707L7 Circuit with wire-wound inductors ............................................... 9 Stability Factor k of the BGB707L7 Circuit with wire-wound inductors .............................................. 10 OIP3 of the BGB707L7 Circuit with wire-wound inductors ................................................................ 10 Off-switching time of the BGB707L7 Circuit with wire-wound inductors ............................................ 11 On-switching time of the BGB707L7 Circuit with wire-wound inductors ............................................ 11 Schematic diagram with low-Q coils .................................................................................................. 13 Insertion Gain of the BGB707L7 Circuit with low-Q inductors ........................................................... 14 Noise Figure of the BGB707L7 Circuit with low-Q inductors ............................................................. 14 Input Matching of the BGB707L7 Circuit with low-Q inductors .......................................................... 15 Output Matching of the BGB707L7 Circuit with low-Q inductors ....................................................... 15 Stability Factor k of the BGB707L7 Circuit with low-Q inductors ....................................................... 16 Stability Factor µ of the BGB707L7 Circuit with low-Q inductors ....................................................... 16 Photo Picture of Evaluation Board (BGB7-Family Ver 3.1)................................................................ 17 PCB Layer Information ....................................................................................................................... 17 List of Tables Table 1 Table 2 Table 3 Table 4 Table 5 Comparison of Performance using high-Q coils vs. using low-Q coils ................................................ 5 Summary of Measurement Results with wire-wound Coils .................................................................. 6 Bill-of-Materials..................................................................................................................................... 7 Summary of Measurement Results with low-Q coils .......................................................................... 12 Bill-of-Materials................................................................................................................................... 13 Application Note AN195, Rev. 1.0 4 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz Overview 1 Overview This application note shows the performance of Infineon’s BGB707L7ESD as a low noise amplifier for the frequency range from 2.3 GHz to 2.7 GHz. This frequency range covers several systems such as S-DMB, WLAN, WiMax, Bluetooth, CMMB, SDARS, ZigBee and many others. The application note is devided in two main parts. The first part shows the application circuit’s performance using wire-wound, high-Q coils, in the second part these coils are exchanged by standard low-Q chip coils. Table 1 gives a quick overview on the difference in performance. Table 1 Comparison of Performance using high-Q coils vs. using low-Q coils Measured at Vcc = 2.8 V, 2.6 GHz Parameter Symbol Value High-Q coils Low-Q coils Unit Gain G 15.0 14.8 dB Noise Figure NF 1.15 1.2 dB Input Return Loss RLin 13 10 dB Output Return Loss RLout 12 12 dB Reverse Isolation IRev 28 26 dB Input P1dB IP1dB -9.5 -8 dBm Input IP3 OP1dB -1 -4 dBm Application Note AN195, Rev. 1.0 5 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with wire-wound coils 2 LNA with wire-wound coils 2.1 Summary of Measurement Results Table 2 Summary of Measurement Results with wire-wound Coils Parameter Symbol Value Unit Frequency Range Freq 2.6 GHz DC Voltage Vcc 2.8 V DC Current Icc 5.6 mA Gain G 15 dB Power @ port1= -30 dBm Noise Figure NF 1.15 dB Including SMA connectors and PCB losses of 0.1dB Gain in off-mode Goff -18 dB Power @ port1= -10 dBm Input Return Loss RLin 13.2 dB Output Return Loss RLout 12.0 dB Reverse Isolation IRev 28.7 dB Input P1dB IP1dB -9.6 dBm Output P1dB OP1dB 4.4 dBm Input IP3 IIP3 -1.4 dBm Power @ Input = -30 dBm, ∆f =1 MHz Output IP3 OIP3 13.6 dBm Power @ Input = -30 dBm, ∆f =1 MHz On Switching Time Ton 1.5 µs Off Switching Time Toff 4.2 µs Stability k >1 -- Application Note AN195, Rev. 1.0 6 / 19 Note/Test Condition Power @ port2 = -10 dBm Measured with C2=1nF 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with wire-wound coils 2.2 Schematic Diagram Figure 1 Schematic diagram with wire-wound coils Table 3 Bill-of-Materials Symbol Value Unit Size C1 3.9 pF 0402 various Input Matching/DC Block C2 1 nF 0402 various RF Bypass C3 39 pF 0402 various Negative Feedback C4 10 nF 0402 various RF Bypass C5 10 pF 0402 various Output Matching/DC Block L1 2.9 nH 0402 Murata LQW15 Input Matching/Biasing L2 40 nH 0402 Murata LQW15 DC Feed to collector/RF block R1 1.5 kΩ 0402 various Negative Feedback R2 2.7 kΩ 0402 various DC current Regulation R3 22 Ω 0402 various Stabilisation/Output Matching Q1 BGB707L7 TSLP7-1 Infineon SiGe MMIC LNA with integrated ESD protection Application Note AN195, Rev. 1.0 Manufacturer 7 / 19 Comment 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with wire-wound coils 2.3 Measured Graphs Figure 2 Insertion Gain of the BGB707L7 Circuit with wire-wound inductors Figure 3 Input Matching of the BGB707L7 Circuit with wire-wound inductors Application Note AN195, Rev. 1.0 8 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with wire-wound coils Figure 4 Output Matching of the BGB707L7 Circuit with wire-wound inductors Figure 5 Reverse Isolation of the BGB707L7 Circuit with wire-wound inductors Application Note AN195, Rev. 1.0 9 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with wire-wound coils Figure 6 Stability Factor k of the BGB707L7 Circuit with wire-wound inductors Figure 7 OIP3 of the BGB707L7 Circuit with wire-wound inductors Application Note AN195, Rev. 1.0 10 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with wire-wound coils Figure 8 Off-switching time of the BGB707L7 Circuit with wire-wound inductors Figure 9 On-switching time of the BGB707L7 Circuit with wire-wound inductors Application Note AN195, Rev. 1.0 11 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with low-Q coils 3 LNA with low-Q coils 3.1 Summary of Measurement Results Table 4 Summary of Measurement Results with low-Q coils Parameter Symbol Value Unit Frequency Range Freq 2.6 GHz DC Voltage Vcc 2.8 V DC Current Icc 5.3 mA Gain G 14.8 dB Noise Figure NF 1.2 dB Note/Test Condition Power @ port1= -30 dBm Off-mode gain = -22dB Including SMA connectors and PCB losses of 0.1dB Input Return Loss RLin 10 dB Output Return Loss RLout 12 dB Reverse Isolation IRev 26 dB Input P1dB IP1dB -8 dBm Output P1dB OP1dB 5 dBm Input IP3 IIP3 -4 dBm Power @ Input = -30 dBm, ∆f =1 MHz Output IP3 OIP3 10 dBm Power @ Input = -30 dBm, ∆f =1 MHz Stability k >1 -- Application Note AN195, Rev. 1.0 12 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with low-Q coils 3.2 Schematic Diagram Figure 10 Schematic diagram with low-Q coils Table 5 Bill-of-Materials Symbol Value Unit Size C1 3.9 pF 0402 various Input Matching/DC Block C2 1 nF 0402 various RF Bypass C3 39 pF 0402 various Negative Feedback C4 10 nF 0402 various RF Bypass C5 10 pF 0402 various Output Matching/DC Block L1 3.0 nH 0402 Murata LQG15 Input Matching/Biasing L2 47 nH 0402 Murata LQG15 DC Feed to collector/RF block R1 1.5 kΩ 0402 various Negative Feedback R2 2.7 kΩ 0402 various DC current Regulation R3 22 Ω 0402 various Stabilisation/Output Matching Q1 BGB707L7 TSLP7-1 Infineon SiGe MMIC LNA with integrated ESD protection Application Note AN195, Rev. 1.0 Manufacturer 13 / 19 Comment 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with low-Q coils 3.3 Measured Graphs S21 25 DB(|S(2,1)|) BGB707L7_lowQ 20 15 10 2.7 GHz 14 dB 2.3 GHz 15.06 dB 5 0 2 Figure 11 2.2 2.4 2.6 Frequency (GHz) 2.8 3 Insertion Gain of the BGB707L7 Circuit with low-Q inductors Noise Figure 1.5 PlotCol(1,2) Noise Figure 1.45 Noise Figure (dB) 1.4 1.35 1.3 1.25 1.2 1.15 1.1 1.05 1 2.3 Figure 12 2.35 2.4 2.45 2.5 2.55 Frequency (GHz) 2.6 2.65 2.7 Noise Figure of the BGB707L7 Circuit with low-Q inductors Application Note AN195, Rev. 1.0 14 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with low-Q coils S11 0 DB(|S(1,1)|) BGB707L7_lowQ -5 2.3 GHz -12.06 dB -10 2.7 GHz -9.491 dB -15 -20 2 Figure 13 2.2 2.4 2.6 Frequency (GHz) 2.8 3 Input Matching of the BGB707L7 Circuit with low-Q inductors S22 0 DB(|S(2,2)|) BGB707L7_lowQ -5 2.3 GHz -10.08 dB 2.7 GHz -11.95 dB -10 -15 -20 2 Figure 14 2.2 2.4 2.6 Frequency (GHz) 2.8 3 Output Matching of the BGB707L7 Circuit with low-Q inductors Application Note AN195, Rev. 1.0 15 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz LNA with low-Q coils Stability Factor k 3 2.5 2 1.5 1 K() BGB707L7_lowQ 0.5 0 0 Figure 15 2 4 6 Frequency (GHz) 8 10 Stability Factor k of the BGB707L7 Circuit with low-Q inductors Stability Factor Mu 3 MU1() BGB707L7_lowQ 2.5 MU2() BGB707L7_lowQ 2 1.5 1 0.5 0 0 Figure 16 2 4 6 Frequency (GHz) 8 10 Stability Factor µ of the BGB707L7 Circuit with low-Q inductors Application Note AN195, Rev. 1.0 16 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz Evaluation Board 4 Evaluation Board Figure 17 Picture of Evaluation Board (Type: BGB7-Family Ver 3.1) Figure 18 PCB Layer Information Application Note AN195, Rev. 1.0 17 / 19 2010-09-25 BGB707L7ESD BGB707L7ESD LNA for 2.3 GHz to 2.7 GHz Authors Authors Anthony Thomas, Application Engineer of Business Unit “RF and Protection Devices” Dietmar Stolz, Staff Engineer of Business Unit “RF and Protection Devices” Application Note AN195, Rev. 1.0 18 / 19 2010-09-25 w w w . i n f i n e o n . c o m Published by Infineon Technologies AG AN195