Fast, Simultaneous Optimization of Power Amplifier Input Power and Load Impedance for Power-Added Efficiency and Adjacent-Channel Power Ratio Using the Power Smith Tube

被引：8

作者：

Barkate, Joseph ^{[1
]}

Flachsbart, Matthew ^{[1
]}

Hays, Zachary ^{[1
]}

Fellows, Matthew ^{[1
]}

Barlow, Jennifer ^{[1
]}

Baylis, Charles ^{[1
]}

Cohen, Lawrence ^{[2
,3
]}

Marks, Robert J., II ^{[1
]}

机构：

[1] Baylor Univ, Dept Elect & Comp Engn, One Bear Pl 97356, Waco, TX 76798 USA

[2] Naval Res Lab, Washington, DC 20375 USA

[3] US Naval Res Lab, Div Radar, 4555 Overlook Ave SW, Washington, DC 20375 USA

来源：

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS | 2016年 / 52卷 / 02期

基金：

美国国家科学基金会;

关键词：

RADAR WAVE-FORMS; PULL OPTIMIZATION; ALGORITHM;

D O I：

10.1109/TAES.2015.150335

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Reconfigurable adaptive amplifiers are expected to be a critical component of future adaptive and cognitive radar transmitters. This paper details an algorithm to simultaneously optimize input power and load reflection coefficient of a power amplifier device to obtain the largest power-added efficiency (PAE) possible under a predefined constraint on adjacent-channel power ratio (ACPR). The vector-based search relies on estimation of the PAE and ACPR gradients in the three-dimensional power Smith tube. Accurate convergence to the optimum impedance in the Smith chart is demonstrated in simulation and measurement search experiments requiring between 20 and 60 experimental queries. This paper presents a fast search to jointly optimize the input power level and load impedance. This method is feasible for future implementation in real-time reconfigurable power amplifiers.

引用

页码：928 / 937

页数：10

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