Analysis and stabilization tools for microwave amplifiers

Author

Collado, Ana ; Ramírez, Franco ; Suárez, Almudena

Author_Institution

Dept. Ingenieria de Commun., Cantabria Univ., Spain

Volume

2

fYear

2004

fDate

6-11 June 2004

Firstpage

945

Abstract

In this paper, harmonic balance and envelope-transient tools are applied to the analysis and design of potentially unstable power amplifiers. The ranges of unstable behaviour are determined through bifurcation detection and the effects of odd-mode instability on the intermodulation distortion are investigated. The amplifier is stabilized using concepts from bifurcation control. Additionally, a feedback configuration for the amplifier stabilization is proposed and the results are compared with those obtained with previous methods, based on resistive loading. The techniques have been applied to a 4 GHz microwave amplifier.

Keywords

bifurcation; circuit feedback; circuit stability; intermodulation distortion; microwave power amplifiers; 4 GHz; amplifier stabilization; bifurcation detection; envelope-transient tools; feedback configuration; harmonic balance; intermodulation distortion; microwave amplifier; odd-mode instability; unstable power amplifiers; Bifurcation; Circuit topology; Frequency; Harmonic analysis; Microwave amplifiers; Power amplifiers; Power system harmonics; Stability analysis; Transient analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1339133

Filename

1339133