Phase modulator with low nonlinear distortion

Author

Temerinac, M.R. ; Marin¿¿i¿¿, A.S.

Author_Institution

University of Novi Sad, Institute of Power and Electronics Engineering, Faculty for Technical Sciences, Novi Sad, Yugoslavia

Volume

131

Issue

4

fYear

1984

fDate

8/1/1984 12:00:00 AM

Firstpage

161

Lastpage

170

Abstract

In the paper results of an investigation of a phase modulator with linear segmental approximation of the trigonometric functions are given. Specific features of this modulator are high stability of the carrier frequency, large baseband bandwidth, and very low nonlinear distortion for maximum phase deviation of 90Â° or 180Â°. The investigation included computer simulations and experiments with the prototype modulator. The influence of the nonlinearity of the diode characteristics, of the temperature variation, and of the maximum phase deviation-variation is examined. In addition, procedures for the maximum phase deviation enhancement and for the optimisation of the modulator elements for given signal statistics are described.

Keywords

digital simulation; modulators; optimisation; carrier frequency stability; computer simulations; diode characteristics nonlinearity; large baseband bandwidth; linear segmental approximation; low nonlinear distortion; maximum phase deviation-variation; optimisation; phase modulator; temperature variation; trigonometric functions;

fLanguage

English

Journal_Title

Electronic Circuits and Systems, IEE Proceedings G

Publisher

iet

ISSN

0143-7089

Type

jour

DOI

10.1049/ip-g-1:19840033

Filename

4646165