BF R38 0F High Lin e arit y Lo w Nois e A m plifier fo r IS DB -T A pplicati on Technic al Rep ort T R 1108 Revision: Rev. 1.0 2012-07-17 RF and P r otecti on D evic es Edition 2012-07-17 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). 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BFR380F High Linearity LNA for ISDB-T Application Technical Report TR1108 Revision History: 2012-07-17 Previous Revision: No previous revision 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 Technical Report TR1108, Rev. 1.0 3 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application List of Content, Figures and Tables Table of Content 1 Overview ............................................................................................................................................. 5 2 Summary of Measurement Results .................................................................................................. 5 3 Description .......................................................................................................................................... 6 4 Schematics ......................................................................................................................................... 7 5 Measured Graphs ............................................................................................................................... 8 6 Evaluation Board and Layout Information .................................................................................... 15 7 Authors .............................................................................................................................................. 16 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 Schematic Diagram of the used Circuit ................................................................................................ 7 Insertion Power Gain of the 430-770 MHz ISDB-T LNA using BFR380F ............................................ 8 Reverse Isolation of the the 430-770 MHz ISDB-T LNA using BFR380F............................................ 8 Noise Figure of the the 430-770 MHz ISDB-T LNA using BFR380F ................................................... 9 Input 1dB compression point of the ISDB-T LNA using BFR380F at 430MHz .................................... 9 Input 1dB compression point of the ISDB-T LNA using BFR380F at 770MHz .................................. 10 Input Matching of the 430-770 MHz ISDB-T LNA using BFR380F .................................................... 10 Input Matching of the 430-770 MHz ISDB-T LNA using BFR380F (Smith Chart) ............................. 11 Output Matching of the 430-770 MHz ISDB-T LNA using BFR380F ................................................. 11 Output Matching of the 430-770 MHz ISDB-T LNA using BFR380F (Smith Chart) .......................... 12 Wideband Stability K Factor of the 430-770 MHz ISDB-T LNA using BFR380F ............................... 12 Wideband Stability Mu Factor of the 430-770 MHz ISDB-T LNA using BFR380F ............................ 13 rd Output 3 Order Intercept Point of the ISDB-T LNA using BFR380F at 431MHz ............................. 13 rd Output 3 Order Intercept Point of the ISDB-T LNA using BFR380F at 768MHz ............................. 14 Photo of the BFR380F circuit on the Evaluation Board (PCB Marking M111118) ............................ 15 PCB Layer Information ....................................................................................................................... 15 List of Tables Table 1 Table 2 Summary of Measurement Results ...................................................................................................... 5 Bill-of-Materials..................................................................................................................................... 7 Technical Report TR1108, Rev. 1.0 4 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Overview 1 Overview Device: BFR380F Application: High Linearity LNA for ISDB-T Application PCB Marking: M111118 2.0mm EDG 2 Summary of Measurement Results Table 1 Summary of Measurement Results Parameter Symbol Value Unit DC Voltage Vcc 4.5 V DC Current Icc 22.0 mA Frequency Range Freq 430 770 MHz Gain G 16.1 13.9 dB Noise Figure NF 1.6 1.4 dB RLin 9.9 11.8 dB RLout 10.8 16.4 dB IRev 25.2 20.2 dB Input P1dB IP1dB -7.2 -2.9 dBm Output P1dB OP1dB 7.9 9.9 dBm Input IP3 IIP3 10.0 12.9 dBm Output IP3 OIP3 26.0 26.8 dBm Input Return Loss Output Return Loss Reverse Isolation Stability k Technical Report TR1108, Rev. 1.0 -- >1 5 / 17 Note/Test Condition SMA and PCB losses substracted f1=431 MHz, Δf=1 MHz, Pin= -25 dBm f1=768 MHz, Δf=1 MHz, Pin= -25 dBm Stability measured from 10MHz to 10GHz 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Description 3 Description This report presents the measurement results of BFR380F as low noise amplifier for ISDB-T application. ISDB-T (Integrated Services Digital Broadcasting) is the Japanese digital video and audio broadcasting standard. It adopts the frequency range of 430MHz to 770MHz in the UHF (Ultra-high Frequency) band. In this application note, the BFR380F is used to design an application circuit with requirements of Supply voltage Vcc < 5V, Supply current Icc < 25mA, Noise Figure NF < 2 dB, and Input Third Order Intercept Point (IIP3) of +10dBm. The circuit as shown in Figure 1 has achieved input and output matching of over 10dB, gain of 13.8-16.0dB, and reverse isolation of >25dB in the 430-770MHz band. The noise figure is 1.4 - 1.6dB. This circuit is unconditionally stable from 10MHz to 10GHz. At the frequency of 430 MHz, using two tones spaced of 1MHz, the input third intercept point reaches +10.0dBm. Besides, the measured input 1dB compression point is -7.2 dBm. At the frequency of 770MHz, the input third intercept point is +12.9dBm, and input 1dB compression point is -2.9dBm. Technical Report TR1108, Rev. 1.0 6 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Schematics 4 Schematics Figure 1 Schematic Diagram of the used Circuit Table 2 Symbol Bill-of-Materials Value Unit Size Manufacturer Comment C1 100 pF 0402 Various Input DC block, input matching C2 330 pF 0402 Various Output DC block, output matching C3 100 nF 0402 Various RF decoupling / blocking cap C4 100 nF 0402 Various C5 330 pF 0402 Various RF decoupling / blocking cap Negative feedback L1 27 nH 0402 LQG series Input matching and bias to the Base L2 24 nH 0402 LQG series R1 18 kΩ 0402 Various Output matching and bias to the Collector Base biasing R2 22 Ω 0402 Various R3 33 Ω 0402 Various R4 560 Ω 0402 Various DC biasing DC biasing (provides DC negative feedback to stabilize DC operating point over temperature variation, transistor hFE variation, etc.) Negative feedback Q1 BFR380F Infineon Technologies Silicon RF Transistor Technical Report TR1108, Rev. 1.0 TSFP3 7 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Measured Graphs 5 Measured Graphs Insertion Power Gain InBand 20 15 430 MHz 16.1 dB 10 770 MHz 13.9 dB 5 0 100 300 500 700 900 Frequency (MHz) Figure 2 Insertion Power Gain of the 430-770 MHz ISDB-T LNA using BFR380F Reverse Isolation -15 430 MHz -25.2 dB -20 770 MHz -20.2 dB -25 -30 -35 100 300 500 700 900 Frequency (MHz) Figure 3 Reverse Isolation of the the 430-770 MHz ISDB-T LNA using BFR380F Technical Report TR1108, Rev. 1.0 8 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Measured Graphs Noise Figure 2.2 2 430 MHz 1.586 dB NF(dB) 1.8 770 MHz 1.406 dB 1.6 1.4 1.2 1 400 500 600 700 800 900 Frequency (MHz) Figure 4 Noise Figure of the the 430-770 MHz ISDB-T LNA using BFR380F Input 1dB Compression Point at 430MHz 20 Gain(dB) 15 -20.0 16.0 -7.2 15.0 10 5 0 -20 -15 -10 -5 0 Pin [dBm] Figure 5 Input 1dB compression point of the ISDB-T LNA using BFR380F at 430MHz Technical Report TR1108, Rev. 1.0 9 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Measured Graphs Input 1dB Compression Point at 770MHz 20 Gain(dB) 15 -20.0 13.8 10 -2.9 12.8 5 0 -20 -15 -10 -5 0 Pin [dBm] Figure 6 Input 1dB compression point of the ISDB-T LNA using BFR380F at 770MHz Input Matching 0 -5 430 MHz -9.9 dB 770 MHz -11.8 dB -10 -15 100 Figure 7 200 300 400 500 600 Frequency (MHz) 700 800 900 Input Matching of the 430-770 MHz ISDB-T LNA using BFR380F Technical Report TR1108, Rev. 1.0 10 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Measured Graphs Swp Max 900MHz 2. 0 0. 6 0.8 1.0 Input Matching Smith 430 MHz r 0.555834 x 0.234667 3. 0 4. 0 0. 4 5. 0 10.0 5.0 4.0 3.0 2.0 1.0 0.8 0.6 0.4 0 10.0 0 .2 .0 .0 .0 Figure 8 -1.0 -0.8 -0 .6 -2 .0 -3 .4 -4 -0 -5 -0 -10. 2 0.2 0. 770 MHz r 0.636498 x 0.218373 Swp Min 100MHz Input Matching of the 430-770 MHz ISDB-T LNA using BFR380F (Smith Chart) Output Matching -5 430 MHz -10.8 dB -10 770 MHz -16.4 dB -15 -20 100 Figure 9 300 500 Frequency (MHz) 700 900 Output Matching of the 430-770 MHz ISDB-T LNA using BFR380F Technical Report TR1108, Rev. 1.0 11 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Measured Graphs Swp Max 900MHz 2. 0 0. 6 0.8 1.0 Output Matching Smith 3. 0 5. 10.0 5.0 4.0 2 0 .2 .0 .0 .0 Figure 10 -1.0 -0.8 -0 .6 -2 .0 -3 .4 -4 -0 -5 -0 0 10.0 3.0 1.0 0.8 0.6 0.4 0. 0.2 4. 770 MHz r 0.923856 x 0.282355 2.0 4 0 0 -10. 0. 430 MHz r 0.601818 x 0.236924 Swp Min 100MHz Output Matching of the 430-770 MHz ISDB-T LNA using BFR380F (Smith Chart) Stability k Factor 5 4 3 2 2089.2 MHz 1.055 1 0 10 Figure 11 2010 4010 6010 Frequency (MHz) 8010 10000 Wideband Stability K Factor of the 430-770 MHz ISDB-T LNA using BFR380F Technical Report TR1108, Rev. 1.0 12 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Measured Graphs Stability Mu Factor 2 1.5 1 0.5 MU1() MU2() 0 10 2010 4010 6010 8010 10000 Frequency (MHz) Figure 12 Wideband Stability Mu Factor of the 430-770 MHz ISDB-T LNA using BFR380F Output 3rd Order Intercept Point 431MHz 0 431 MHz -9.3 Power (dBm) -20 -40 430 MHz -79.9 -60 -80 -100 429 430 431 432 433 434 Frequency (MHz) Figure 13 rd Output 3 Order Intercept Point of the ISDB-T LNA using BFR380F at 431MHz Technical Report TR1108, Rev. 1.0 13 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Measured Graphs Output 3rd Order Intercept Point 768MHz 0 768.0 MHz -11.5 Power (dBm) -20 -40 -60 767.0 MHz -88.0 -80 -100 766 Figure 14 767 768 769 Frequency (MHz) 770 771 rd Output 3 Order Intercept Point of the ISDB-T LNA using BFR380F at 768MHz Technical Report TR1108, Rev. 1.0 14 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Evaluation Board and Layout Information 6 Evaluation Board and Layout Information Figure 15 Photo of the BFR380F circuit on the Evaluation Board (PCB Marking M111118) Vias FR4 Core, 0.2mm Copper 35µm Figure 16 FR4 Prepreg, 0.8mm PCB Layer Information Technical Report TR1108, Rev. 1.0 15 / 17 2012-07-17 BFR380F High Linearity LNA for ISDB-T Application Authors 7 Authors Xiang Li , Application Engineer of Business Unit “RF and Protection Devices” Dr. Chih-I Lin, Senior Staff Engineer/Technical Marketing RF of Business Unit “RF and Protection Devices” Technical Report TR1108, Rev. 1.0 16 / 17 2012-07-17 w w w . i n f i n e o n . c o m Published by Infineon Technologies AG TR1108