Electromagnetic field analysis of a four-wire anechoic chamber

Author

Jarem, John M.

Author_Institution

Dept. of Electr. & Comput. Eng., Alabama Univ., Huntsville, AL, USA

Volume

38

Issue

11

fYear

1990

fDate

11/1/1990 12:00:00 AM

Firstpage

1835

Lastpage

1842

Abstract

The electromagnetic field characteristics and plane-wave generating ability of a parallel four-wire anechoic chamber which is to be operated in the VHF range is analyzed. The analysis considers three cases: the first is a four-wire chamber when only a thin layer of absorber material covers the chamber walls, the second is a four-wire chamber when only free space surrounds the four wires of the system, and the third is a four-wire chamber when a thick layer of absorber material covers the anechoic chamber walls. The three cases are analyzed by a variety of mathematical methods including the method of moments, waveguide theory, and a finite-difference time-domain method. Numerical results for the propagation constants and electromagnetic fields that are generated in the chamber in the three cases are presented

Keywords

anechoic chambers; difference equations; electromagnetic field theory; time-domain analysis; waveguide theory; wires (electric); EM field analysis; VHF range; absorber material; antenna; chamber walls; electromagnetic field characteristics; finite-difference time-domain method; four-wire anechoic chamber; free space; mathematical methods; method of moments; numerical results; plane wave generation; propagation constants; thick layer; thin layer; waveguide theory; Anechoic chambers; Character generation; Electromagnetic analysis; Electromagnetic fields; Electromagnetic waveguides; Finite difference methods; Moment methods; Time domain analysis; Waveguide theory; Wires;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.102747

Filename

102747