A novel series diode linearizer for mobile radio power amplifiers

Author

Yamauchi, K. ; Mori, K. ; Nakayama, M. ; Itoh, Y. ; Mitsui, Y. ; Ishida, O.

Author_Institution

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

Volume

2

fYear

1996

fDate

17-21 June 1996

Firstpage

831

Abstract

A novel series diode linearizer has been developed for mobile radio power amplifiers. It is composed of a series diode with a parallel capacitor, which provides positive amplitude and negative phase deviations with the increase of input power, and can compensate AM-AM and AM-PM distortions of power amplifiers. Applying this linearizer to 1.9 GHz MMIC power amplifier for the Japanese Personal Handy-phone System (PHS), an improvement of adjacent channel leakage power (ACP) up to 5 dB has been achieved for the /spl pi//4-shifted QPSK modulated signal.

Keywords

MMIC power amplifiers; UHF integrated circuits; UHF power amplifiers; compensation; electric distortion; land mobile radio; linearisation techniques; /spl pi//4-shifted QPSK modulated signal; 1.9 GHz; AM-AM distortions; AM-PM distortions; Japanese PHS; Japanese Personal Handy-phone System; MMIC power amplifier; UHF; distortion compensation; mobile radio power amplifiers; parallel capacitor; series diode linearizer; Capacitance; Capacitors; Diodes; Equivalent circuits; Fourier transforms; Impedance; Land mobile radio; Microwave Theory and Techniques Society; Phase measurement; Power amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1996., IEEE MTT-S International

Conference_Location

San Francisco, CA, USA

ISSN

0149-645X

Print_ISBN

0-7803-3246-6

Type

conf

DOI

10.1109/MWSYM.1996.511066

Filename

511066