Accurate Linearization with Low-Complexity Models Using Cascaded Digital Predistortion Systems

被引：9

作者：

Barradas, Filipe M. ^{[1
]}

Nunes, Luis C. ^{[1
]}

Pedro, Jose C. ^{[1
]}

Cunha, Telmo R. ^{[1
]}

Lavrador, Pedro M. ^{[1
]}

Cabral, Pedro M. ^{[1
]}

机构：

[1] Univ Aveiro, Inst Telecomunicacoes, DETI, P-3800 Aveiro, Portugal

来源：

IEEE MICROWAVE MAGAZINE | 2015年 / 16卷 / 01期

关键词：

Power amplifiers - Radio frequency amplifiers - Efficiency;

D O I：

10.1109/MMM.2014.2367864

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：

Power efficiency is one of the main concerns in modern radio frequency (RF) power amplifier (PA) design. However, efficiency-driven designs typically impose operation of these devices in a compressed mode [1]. When operating in this region, the amplifiers will behave nonlinearly and produce a distorted output signal [1]. This distortion produces new spectral components at the PAs' output that are outside the bandwidth of the input signal, so the distorted output signal has a wider bandwidth than the input signal. This bandwidth enlargement effect, called "spectral regrowth," is undesired in RF transmitters due to wireless systems' spectral mask regulations [2]. © 2000-2012 IEEE.

引用

页码：94 / 103

页数：10

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