Performance Improvement of Power Amplifiers with Digital Linearization Technology

Wei Jiang,Bo Xing,JingQi Wang,Yan Ni,Chong Peng,Xiaowei Zhu,Wei Hong

Bangkok（2007）

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摘要

In this paper, a digital linearization platform which consists of digital predistortion (DPD) and Crest factor reduction (CFR) is presented, which is applied to improve the efficiency and linearity of GaAs power amplifier (PA) modules. For a 16W GaAs PA module driven by a two-carrier WCDMA input signal with 12.6dB peak average power ratio (PAPR), the output power is improved from 28.8dBm to 32.8dBm while the adjacent channel leakage ratio (ACLR) is kept as -45dBc@5MHz is achieved after using the digital linearization technology.

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关键词

digital linearization technology,predistortion,linearisation techniques,wcdma input signal,crest factor reduction,gallium arsenide,power amplifier,power amplifiers,adjacent channel leakage ratio,digital linearization,code division multiple access,digital predistortion,peak average power ratio,adjacent channel interference,power amplifier module,spread spectrum communication,linearity,power generation

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