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| AN0010 13 AN0010 Evaluation Board Assembly Biasing Configuration Evaluation Board Assembly Biasing Configuration Introduction This application note provides information on the evaluation board assembly supplied by RFMD. This information covers NBB Series HBT Broadband Feedback Amplifiers and NDA Series HBT Distributed Amplifiers. The evaluation board assembly provided by RFMD is intended for customers to evaluate our product using a network analyzer. NBB Series HBT Broadband Feedback Amplifiers 1. What is provided with the evaluation board assembly? a. An NBB part mounted on a PCB with connectors. b. S-parameter data (provided with all evaluation boards). Note: The s-parameter data gain results include device performance as well as evaluation board and connector loss variations. The insertion losses of the evaluation board and connectors are as follows. 1. 1GHz to 4GHz=-0.06dB 2. 5GHz to 9GHz=-0.22dB 3. 10GHz to 14GHz=-0.50dB 4. 15GHz to 20GHz=-1.08dB PC Board (1) SMA Connector (2) VC DUT INPUT RFMD OUTPUT Figure 1. NBB-Series Evaluation Board 2. Bill of Materials for NBB Series evaluation board assembly: a. NBB series component. b. Two (2) SMA connectors. c. One (1) PC board material, Rogers Corp. part number: TMM-6, 20mil thick or equivalent. d. 60/40 tin-lead solder. 3. Figure of Evaluation Board with external biasing Note: Biasing components are not supplied with evaluation board assembly. VCC 13 TECHNICAL NOTES AND ARTICLES RCC 120 VC L Choke Output Input C Block INPUT DUT OUTPUT RFMD C Block Figure 2. NBB-Series Evaluation Board with External Biasing Copyright 1997-2002 RF Micro Devices, Inc. 13-9 AN0010 NDA Series HBT Distributed Amplifiers 1. What is provided with the evaluation board assembly? a. An NDA part mounted on a PCB with connectors. b. Biasing resistor RCC1 (120). c. S-parameter data (provided with all evaluation boards). Note: The s-parameter data gain results include device performance as well as evaluation board and connector loss variations. The insertion losses of the evaluation board and connectors are as follows. 1. 1GHz to 4GHz=-0.06dB 2. 5GHz to 9GHz=-0.22dB 3. 10GHz to 14GHz=-0.50dB 4. 15GHz to 20GHz=-1.08dB PC Board (1) Attach AGC voltage to this point RCC1 SMA Connector (2) VC1 VC2 DUT INPUT RFMD OUTPUT Figure 3. NDA-Series Evaluation Board 2. Bill of Materials for NDA Series evaluation board assembly: a. NDA series component. b. 1205% surface-mount resistor. c. Two (2) SMA connectors. d. One (1) PC board material, Rogers Corp. part number: TMM-6, 20mil thick or equivalent. e. 60/40 tin-lead solder. 3. Figure of Evaluation Board with external biasing Note: Biasing components are not supplied with evaluation board assembly. VCC1 VCC 13 TECHNICAL NOTES AND ARTICLES RCC1 VC1 C1 1 F RCC 120 L Choke VC2 Input C Block INPUT DUT OUTPUT RFMD C Block Output Figure 4. NDA-Series Evaluation Board with External Biasing 13-10 Copyright 1997-2002 RF Micro Devices, Inc. |
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