Optimization analysis of feedforward power amplifier

Author

Andrenko, Andrey S. ; Horiguchi, Kenichi ; Nakayama, Masatoshi ; Ikeda, Yukio ; Ishida, Osami

Author_Institution

Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kanagawa, Japan

Volume

3

fYear

1999

fDate

1999

Firstpage

626

Abstract

The efficiency optimization of a feedforward low distortion power amplifier is presented. Based on the principle of distortion compensation, the main amplifier output power, that of subamplifier, and amplifier efficiency have been accurately derived. In the present analysis, the coupling coefficient of main signal and distortion paths is selected as the optimization parameter because it may essentially affect the amplifier performance. Simulation results have been obtained for different values of signal cancel ratio and adjacent channel leakage power. The analysis contributes to the design improvement of a power amplifier of mobile communication base stations

Keywords

feedforward; power amplifiers; adjacent channel leakage power; computer simulation; coupling coefficient; design optimization; distortion compensation; efficiency; feedforward power amplifier; mobile communication base station; output power; signal cancel ratio; Base stations; Couplings; Distortion; Mobile communication; Operational amplifiers; Performance analysis; Power amplifiers; Power generation; Propagation losses; Signal analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 1999 Asia Pacific

Print_ISBN

0-7803-5761-2

Type

conf

DOI

10.1109/APMC.1999.833669

Filename

833669