A new design method for performance improvement of high power amplifier by using the matching circuit of defected ground structure

Author

Cha, Yong-Sung ; Kang, Byeong-Gwon ; Kim, Young-Tae ; Kim, Sun-Hyeong ; Park, Jun-Seok ; Lim, Jae-Bong

Author_Institution

Sch. of Inf. Technol. Eng., Soonchunhyang Univ., Asan, South Korea

Volume

3

fYear

2003

fDate

7-9 Oct. 2003

Firstpage

1341

Abstract

This paper describes a novel design method and the improvements of performance of a class AB power amplifier by using the equivalent circuit of Defected Ground Structure (DGS). The equivalent circuit of DGS has been used to optimize the output matching circuit for improving the performance of power amplifier. Design method for a power amplifier presented in this paper can provide the accurate design results to satisfy the optimum load condition and the desirable harmonic rejection, simultaneously. As a design example, we have designed a 20W power amplifier by the suggested design method. Measured results for the fabricated DGS power amplifier show pertinently the validity of this paper.

Keywords

UHF power amplifiers; equivalent circuits; 20 W; class AB power amplifier; defected ground structure; equivalent circuit; harmonic rejection; matching circuit; Design engineering; Design methodology; Equivalent circuits; High power amplifiers; Impedance matching; Inductors; Power amplifiers; Power engineering and energy; Power generation; Power system harmonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2003. 33rd European

Print_ISBN

1-58053-834-7

Type

conf

DOI

10.1109/EUMC.2003.1262906

Filename

1262906