A NEW ADAPTIVE DOUBLE ENVELOPE FEEDBACK (ADEF) LINEARIZER FOR SOLID-STATE POWER-AMPLIFIERS

被引：8

作者：

CARDINAL, JS ^{[1
]}

GHANNOUCHI, FM ^{[1
]}

机构：

[1] UNIV MONTREAL,ECOLE POLYTECH MONTREAL,DEPT ELECTR & COMP ENGN,MONTREAL,PQ,CANADA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1995年 / 43卷 / 07期

关键词：

D O I：

10.1109/22.392908

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：

A new adaptive double envelope feedback (ADEF) linearizer using a voltage-controlled phase-shifter for predistortion purpose and a dynamic gate bias for gain stabilization purpose has been developed and implemented on a two-watt MESFET amplifier, A two-tone test around 1.6 GHz shows average in-band intermodulation product below -40 dBc up to saturation with a power-added efficiency of 40% at the 1-dB compression point, Validation of the adaptive features of the ADEF technique is carried out with respect to carrier frequency; temperature, two-tone amplitude offset and spacing. In addition, a new formula, which directly relates the third order intermodulation level to the AM/AM and AM/PM distortion coefficients of solid state nonlinear amplifiers is proposed and its accuracy is assessed using both simulation and experimental results.

引用

页码：1508 / 1515

页数：8

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