B GB 707L 7ESD BGB707L 7ESD L N A Circui t with lo wQ I nduc to rs fo r 2. 3 G Hz-2 .7 GHz W L A N / Wi M A X / S D M B A p p l i c a t i o n s Technic al Rep ort T R 170 Revision: Rev. 1.0 Date: 14. December 2009 Author: Dr. Chih-I Lin RF and Protecti on Devi c es Edition 14. December 2009 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. 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Technical Report TR170 BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz-2.7GHz WLAN/WiMAX/SDMB Applications Technical Report TR170 Revision History: 14. December 2009 Previous Revision: Page Subjects (major changes since last revision) Technical Report TR170, Rev. 1.0 3 / 12 14. December 2009 Technical Report TR170 BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz-2.7GHz WLAN/WiMAX/SDMB Applications 1 Overview Device: BGB707L7ESD Application: BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz2.7GHz WLAN/WiMAX/SDMB Applications PCB Marking: BGB7-Family V3.1 2 Summary of Measurement Results Table 1 Summary of Measurement Results Parameter Symbol Value Unit Frequency Range Freq 2.3 – 2.7 GHz DC Voltage Vcc 2.8 V DC Current Icc 5.3 mA Gain G Noise Figure NF 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 Technical Report TR170, Rev. 1.0 14.2 1.16 dB dB Note/Test Condition Power @ port1= -30 dBm Off-mode gain = -22dB Including SMA connectors and PCB losses of 0.1dB -- 4 / 12 14. December 2009 Technical Report TR170 BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz-2.7GHz WLAN/WiMAX/SDMB Applications 3 Description This report presents the measurement results of the Low Noise Amplifier using the SiGe:C LNA BGB707L7ESD from Infineon Technologies for the applications in the frequency range of 2.3 to 2.7GHz, such as SDMB, WLAN, WiMAX, Bluetooth, CMMB and other wireless applications. This technical report is the extended report to Technical Report of TR122, but with lowQ inductors to enable the designers to realize outstanding performance with lower cost. The LNA brings a gain of 14.2 dB and on the frequency of 2.6GHz with a noise figure of 1.16 dB (including the SMA connector and PCB losses of 0.1dB). Furthermore, this device provides an unconditionally stability up to 10GHz. With a current of 5.3mA, this circuit achieves a high output P1dB of +5 dBm and IP3 of +10 dBm. Technical Report TR170, Rev. 1.0 5 / 12 14. December 2009 Technical Report TR170 BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz-2.7GHz WLAN/WiMAX/SDMB Applications 4 Schematics Figure 1 Schematics of the used Circuit Table 2 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 Technical Report TR170, Rev. 1.0 Manufacturer 6 / 12 Comment 14. December 2009 Technical Report TR170 BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz-2.7GHz WLAN/WiMAX/SDMB Applications 5 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 2 2.2 2.4 2.6 Frequency (GHz) 2.8 3 Insertion Gain of the BGB707L7 Circuit with low-Q inductors for 2.3GHz to 2.7 GHz Applications 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 3 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 for 2.3GHz to 2.7 GHz Applications Technical Report TR170, Rev. 1.0 7 / 12 14. December 2009 Technical Report TR170 BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz-2.7GHz WLAN/WiMAX/SDMB Applications 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 4 2.2 2.4 2.6 Frequency (GHz) 2.8 3 Input Matching of the BGB707L7 Circuit with low-Q inductors for 2.3GHz to 2.7 GHz Applications S11_smith 0.8 1.0 Swp Max 2.7GHz 2. 0 0. 6 S(1,1) BGB707L7_lowQ 0. 4 0 3. 0 4. 5.0 0.2 10.0 5.0 4.0 3.0 10.0 2.0 1.0 0.8 0.6 0.4 0 0.2 2.3 GHz r 1.5869 x -0.276428 -10.0 2 -0. .0 -2 -1.0 -0.8 -0 .6 -3 .0 Figure 5 -4 .0 -5. 0 2.7 GHz r 1.08251 x -0.741019 .4 -0 Swp Min 2.3GHz S11 of the BGB707L7 Circuit with low-Q inductors for 2.3GHz to 2.7 GHz Applications Technical Report TR170, Rev. 1.0 8 / 12 14. December 2009 Technical Report TR170 BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz-2.7GHz WLAN/WiMAX/SDMB Applications 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 6 2.2 2.4 2.6 Frequency (GHz) 2.8 3 Output Matching of the BGB707L7 Circuit with low-Q inductors for 2.3GHz to 2.7 GHz Applications S22_smith 0. 8 1.0 Swp Max 2.7GHz 2. 0 0. 6 S(2,2) BGB707L7_lowQ 0. 4 0 3. 0 4. 5.0 10.0 5.0 4.0 10.0 3.0 2.0 1.0 0.8 0.6 0.4 0 0.2 0.2 2.7 GHz r 0.681048 x -0.289882 -10.0 2.3 GHz r 0.650578 x -0.4016 0 -4 .0 2 -3 .0 .0 -2 -1.0 -0. 8 -0 .6 .4 -0 Figure 7 -5. -0. Swp Min 2.3GHz S22 of the BGB707L7 Circuit with low-Q inductors for 2.3GHz to 2.7 GHz Applications Technical Report TR170, Rev. 1.0 9 / 12 14. December 2009 Technical Report TR170 BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz-2.7GHz WLAN/WiMAX/SDMB Applications Stability Factor k 3 2.5 2 1.5 1 K() BGB707L7_lowQ 0.5 0 0 Figure 8 2 4 6 Frequency (GHz) 8 10 Stability Factor k of the BGB707L7 Circuit with low-Q inductors for 2.3GHz to 2.7 GHz Applications Stability Factor Mu 3 MU1() BGB707L7_lowQ 2.5 MU2() BGB707L7_lowQ 2 1.5 1 0.5 0 0 Figure 9 2 4 6 Frequency (GHz) 8 10 Stability Factor µ of the BGB707L7 Circuit with low-Q inductors for 2.3GHz to 2.7 GHz Applications Technical Report TR170, Rev. 1.0 10 / 12 14. December 2009 Technical Report TR170 BGB707L7ESD LNA Circuit with low-Q Inductors for 2.3GHz-2.7GHz WLAN/WiMAX/SDMB Applications 6 Evaluation Board and layout Information Figure 10 Photo Picture of Evaluation Board (BGB7-Family Ver 3.1) Figure 11 PCB Layer Information Technical Report TR170, Rev. 1.0 11 / 12 14. December 2009 w w w . i n f i n e o n . c o m Published by Infineon Technologies AG TR170