Joint Linearity and Efficiency Improvement for a High Power Amplifier

被引：1
|
作者：
Brandon, Mathilde [1 ]
Ariaudo, Myriam [1 ]
Traverso, Sylvain [2 ]
Bouvier, Jessica [2 ]
Gautier, Jean-Luc [1 ]
Fijalkow, Inbar [1 ]
机构：
[1] Cergy Pontoise Univ, CNRS, ENSEA, ETIS Lab, F-95000 Cergy, France
[2] THALES Commun & Secur, F-92622 Gennevilliers, France
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2014年 / 24卷 / 12期
关键词：
Digital predistortion (DPD); efficiency; envelope tracking (ET); in-band and out-of-band linearity performance; multicarriers signal; DIGITAL PREDISTORTION;
D O I：
10.1109/LMWC.2014.2361665
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter presents the optimized way to combine predistortion and envelope tracking to improve at the same time the linearity and efficiency performances of an emitter. Applied to a realistic GaN (Gallium Nitride) Power Amplifier (PA) with a highly dynamic Orthogonal Frequency Division Multiplexing (OFDM) signal, the processing allows obtaining an improvement of 20 dB in terms of out-of-band linearity and simultaneously the efficiency is improved by a factor of 1.7 to 3 in the simulated power range. We analyze the performances of the proposed techniques association as a function of the power, showing its robustness.
引用
收藏
页码：884 / 886
页数：3
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