Optimal design of an offset-fed, twin-slot antenna element for millimeter-wave imaging arrays

Author

Qian, Yongxi ; Iwata, Shin-ichirou ; Yamashita, Eikichi

Author_Institution

Dept. of Electron. Eng., Univ. of Electro-Commun., Tokyo, Japan

Volume

4

Issue

7

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

232

Lastpage

234

Abstract

The optimal design of an offset-fed, twin-slot antenna suitable for millimeter wave imaging arrays is reported. The dimensions of the antenna and the slot separation for realizing a desirable beam pattern are obtained by using the spectral domain method. The optimal position of the feeding microstrips for perfect impedance matching is determined through a full-wave analysis using the FD-TD method, which takes into consideration both the slot elements and the feeding networks. The input characteristics of an optimally designed antenna is evaluated with a network analyzer, where a reasonable agreement with theoretical predictions is obtained.<>

Keywords

antenna feeders; antenna radiation patterns; finite difference time-domain analysis; impedance matching; microwave antenna arrays; microwave antennas; slot antennas; spectral-domain analysis; FD-TD method; beam pattern; feeding microstrips; full-wave analysis; impedance matching; input characteristics; millimeter-wave imaging arrays; network analyzer; offset-fed antenna; slot separation; spectral domain method; twin-slot antenna element; Antenna arrays; Antenna theory; Dielectric substrates; Impedance matching; Infrared detectors; Microstrip antennas; Millimeter wave technology; Resonance; Resonant frequency; Slot antennas;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.298250

Filename

298250