BGB741L7ESD LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz A pplications (FM, VHF and UHF) Technical Report TR156 Revision: V1.0 Date: 06 October 2009 RF and Protection Devices Edition 06 October 2009 Published by Infineon Technologies AG 81726 Munich, Germany © 2009 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. Technical Report TR156 LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz Applications Technical Report TR156 Revision History: 06 October 2009 Previous Revision Page Subjects (major changes since last revision) Technical Report TR156, V1.0 3 / 11 06 October 2009 Technical Report TR156 LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz Applications 1 Overview BGB741L7ESD Device: LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz Application: Applications PCB Marking: BGB-7 Family V2.1 2 Summary of Measurement Results Table 1 Summary of Measurement Results Parameter Symbol Value Frequency Range Freq DC Voltage Vcc 3.0 V DC Current Icc 6 mA Gain G 30-108 15.5 108-512 15.2 Unit 850-880 15.2 Note/Test Condition MHz dB Noise Figure NF 1.5 1.4 1.4 dB Input Return Loss RLin -8 -10 -9 dB Output Return Loss RLout -10 -22 -22 dB Reverse Isolation |IRev| 28 27.8 27.5 dB Power @ port1= -30 dBm Including SMA connectors and PCB losses of 0.1dB Power @ port2 = -10 dBm Power @ Input = -30 dBm Input IP3 IIP3 -0.8 dBm Measured @ f1=100MHz ∆f =1 MHz Output IP3 OIP3 14.4 dBm Stability k >1.4 -- Technical Report TR156, V1.0 4 / 11 Stability measured up to 10GHz 06 October 2009 Technical Report TR156 LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz Applications 3 Description This report presents the measurement results of the Low Noise Amplifier using the SiGe:C LNA BGB741L7ESD from Infineon Technologies for the 30 - 880MHz application with an good input and output matching to 50 ohms. The LNA provides a gain of typ. 15 dB in the frequency range of 30 - 880MHz with a noise figure of 1.4 dB (including the SMA connector and PCB losses of 0.1dB). Furthermore, this device provides an unconditionally stability up to 10GHz. Technical Report TR156, V1.0 5 / 11 06 October 2009 Technical Report TR156 LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz Applications 4 Schematics V cc = 3.0 V V Ctrl = 3.0 V J3 DC Connector C3 10nF C2 10nF R1 110 Ohm J1 RF INPUT Figure 1 Table 2 C4 L1 C1 330pF BGB 741L7 ESD 220nH 330pF J2 RF OUTPUT Schematics of the used Circuit Bill-of-Materials Symbol Value Unit Size C1 330 pF 0402 various Input Matching/DC Block C2 10 nF 0402 various RF Bypass C3 10 nF 0402 various RF Bypass C4 330 pF 0402 various Output Matching/DC Block L1 220 nH 0402 Murata LQG15A Input Matching/DC Feed R1 110 Ω 0402 various Dc Feed to collector TSLP7-1 Infineon SiGe MMIC LNA BGB741L7 with integrated ESD protection Q1 Technical Report TR156, V1.0 Manufacturer 6 / 11 Comment 06 October 2009 Technical Report TR156 LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz Applications 5 Measured Graphs Transducer Power Gain 30 25 30 MHz 15.58 dB 880 MHz 15.07 dB 20 15 10 5 0 0 Figure 2 200 400 600 Frequency (MHz) 800 1000 Transducer Power Gain of the BGB741L7ESD. Input Matching 0 -2 -4 30 MHz -6.369 dB -6 880 MHz -9.516 dB -8 -10 -12 0 Figure 3 200 400 600 Frequency (MHz) 800 1000 Input Matching of the BGB741L7ESD Technical Report TR156, V1.0 7 / 11 06 October 2009 Technical Report TR156 LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz Applications Output Matching -5 30 MHz -6.625 dB -10 880 MHz -22.12 dB -15 -20 -25 0 Figure 4 200 400 600 Frequency (MHz) 800 1000 Output Matching of the BGB741L7ESD Reverse Isolation 40 30 MHz 28.8 dB 35 880 MHz 27.56 dB 30 25 20 0 Figure 5 200 400 600 Frequency (MHz) 800 1000 Reverse Isolation of the BGB741L7ESD Technical Report TR156, V1.0 8 / 11 06 October 2009 Technical Report TR156 LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz Applications Stability 5 4 3 30 MHz 1.412 2 1 0 0 Figure 6 2000 4000 6000 Frequency (MHz) 8000 10000 Stability of the BGB741L7ESD Technical Report TR156, V1.0 9 / 11 06 October 2009 Technical Report TR156 LNA matched to 50 Ohm using BGB741L7 for 30 - 880 MHz Applications 6 Evaluation Board and layout Information Figure 7 Photo of Evaluation Board Figure 8 PCB Layer Information Technical Report TR156, V1.0 10 / 11 06 October 2009 w w w . i n f i n e o n . c o m Published by Infineon Technologies AG TR156