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| Mimix WiMAX 8W功率放大器方案 | |||||
作者:Mimix 文章来源:Mimix 点击数: 更新时间:2008-4-7 ![]() |
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2.3-2.7 GHz InGaP HBT 8W Linear Power Amplifier The CHV2720-QJ is a high linearity single stage class AB Heterojunction Bipolar Transistor (HBT) power amplifier capable of 12 dB of gain, 8 Watt of power at 1 dB compression and is housed in a 6X6mm QFN package. The CHV2720-QJ provides less than 2.5% EVM at 31dBm output power with 802.16 OFDM signal and peak to average power ratio of 9 dB. The input of the device is fully matched and the output is internally pre matched to 6 ohm facilitating a simplified output matching approach. This product operates off a single supply voltage between 5V and 12V and includes an internal bias circuitry to enable exact setting of quiescent current using an external control voltage. The device is ideal as a final or driver stage for WiMAX equipment in the 2.3 -2.7 GHz bands. 主要特性: P1dB, 8W Power Gain, 12 dB Efficiency, 25% @ 1W Positive Voltage Supply, +5V to +12V Integrated Active Bias Circuit Control Voltage Allows Different Current Settings Input Fully Matched Internally Output Pre-Matched Internally Thermally Efficient for Higher MTTF RoHS Compliant 6X6mm QFN Ideal for WiMAX and WiBRO Applications (802.16) ![]() ![]() ![]() 图1. CHV2720-QJ推荐的应用电路图 下表为所用元件表: ![]() ![]() 图2. CHV2720-QJ评估板布局图 |
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