Performance analysis of a SAW-based group demultiplexer for on-board processing communications satellites

Author

Loo, Chun

Author_Institution

Commun. Res. Center, Ottawa, Ont., Canada

Volume

41

Issue

7

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

1112

Lastpage

1116

Abstract

Derivations of the chirp Fourier transforms that can be easily implemented with surface acoustic wave (SAW) devices are described. Two configurations-the multiply-convolve-multiply (MCM) and convolve-multiply-convolve (CMC)-are treated. The derivations show that one gives the Fourier transform precisely and the other is an approximation, although a good one under most circumstances. Numerical results for the CMC are given. The results show that windowing is an effective means of reducing the sidelobe level of the output transform, but it is at the expense of widening the main lobe

Keywords

Fourier transforms; demultiplexing equipment; satellite relay systems; signal processing; surface acoustic wave devices; SAW devices; chirp Fourier transforms; communications satellites; convolve-multiply-convolve; group demultiplexer; multiply-convolve-multiply; on-board processing; output transform; performance analysis; sidelobe level reduction; surface acoustic wave; windowing; Artificial satellites; Band pass filters; Chirp; Convolvers; Demodulation; Downlink; Fourier transforms; Mobile communication; Performance analysis; Surface acoustic wave devices;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.231942

Filename

231942