250W HVHBT Doherty with 57% WCDMA Efficiency Linearized to -55dBc for 2c11 6.5dB PAR

2007 IEEE Compound Semiconductor Integrated Circuits Symposium Pub Date : 1900-01-01 DOI:10.1109/csics07.2007.16

C. Steinbeiser, T. Landon, C. Suckling

引用次数: 20

Abstract

A 2-way symmetrical Doherty amplifier exhibiting 250 W saturated power has been developed using High-Voltage HBT (HVHBT) GaAs technology biased at 28 V on the Collector. Greater than 57% collector efficiency at 50W (47dBm) average output power has been demonstrated while achieving -55dBc linearized ACPR at 5 MHz offset using a 2-carrier-side-by-side WCDMA input signal with 6.5dB peak to average ratio measured at .01% probability on the CCDF. At this condition, the measured overall power-added efficiency is 53%. The HVHBT Doherty exhibits 200W (53dBm) PldBat 70% efficiency with 57% efficiency at 6dB output back-off (OBO) from PldB showing a 25 percentage point improvement over class AB operation.

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250W HVHBT Doherty, 57% WCDMA效率，在2c11 6.5dB PAR下线性化至-55dBc

采用高压HBT (HVHBT) GaAs技术在集电极上偏置28 V，开发了一种具有250 W饱和功率的2路对称Doherty放大器。在50W (47dBm)平均输出功率下，集电极效率超过57%，同时在5mhz偏置下实现-55dBc线性化ACPR，使用2载波并排WCDMA输入信号，在CCDF上以0.01%的概率测量6.5dB峰值与平均比。在此条件下，测量到的总功率增加效率为53%。HVHBT Doherty具有200W (53dBm) pldb70 %的效率和6dB输出回退(OBO)时57%的效率，比AB类工作效率提高了25个百分点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2007 IEEE Compound Semiconductor Integrated Circuits Symposium

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