Numerical analysis of a grid array antenna

Author

Nakano, Hisamatsu ; OSHIMA, Ichiro ; Mimaki, Hiroaki ; Yamauchi, Junji ; Hirose, Keikichi

Author_Institution

Coll. of Eng., Hosei Univ., Tokyo, Japan

Volume

2

fYear

1994

fDate

14-18 Nov 1994

Firstpage

700

Abstract

A grid array antenna printed on a dielectric substrate is analyzed using the method of moments. The impedance matrix element is separated into a singularity term and a perturbation term. To save computing time, an interpolation technique is applied to the perturbation term. Numerical results show that a traveling wave with some decay is dominant in the current distribution on the grid wire. Calculations based on the obtained current distribution reveal that the radiation beam direction moves toward the antenna plane, as the frequency decreases. The gain is found to be lower than that for a grid array antenna on an air substrate

Keywords

antenna radiation patterns; antenna travelling wave arrays; current distribution; electric impedance; interpolation; method of moments; microstrip antenna arrays; 12 GHz; SHF; air substrate; antenna plane; current distribution; dielectric substrate; frequency; gain; grid array antenna; impedance matrix element; interpolation technique; method of moments; perturbation term; radiation beam direction; singularity term; traveling wave; Antenna arrays; Current distribution; Dielectric substrates; Directive antennas; Frequency; Impedance; Interpolation; Moment methods; Numerical analysis; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Singapore ICCS '94. Conference Proceedings.

Print_ISBN

0-7803-2046-8

Type

conf

DOI

10.1109/ICCS.1994.474173

Filename

474173