Experimental and simulation studies of the coaxially fed U-slot rectangular patch antenna

Author

Lee, K.F. ; Luk, K.M. ; Tong, K.F. ; Shum, S.M. ; Huynh, T. ; Lee, R.Q.

Author_Institution

Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA

Volume

144

Issue

5

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

354

Lastpage

358

Abstract

Experimental and simulation results are presented on the coaxially fed rectangular patch antenna with a U-shaped slot. Experimental results include impedance bandwidth, copolar- and crosspolar-pattern characteristics and gain measurements. Simulation results are obtained mainly through the development of a FDTD code. It is found that the U-slot patch on a foam substrate of about 0.08λ thick can be designed to attain 20-30% impedance as well as gain bandwidths without the need of parasitic patches on another layer or on the same layer. The far-field patterns have good copolar and crosspolar characteristics. By altering the patch width or feed position, the wideband characteristic can be changed into a dual-frequency characteristic. Simulation results are in good agreement with measurements

Keywords

antenna feeds; antenna radiation patterns; antenna testing; digital simulation; electric impedance; electromagnetic wave polarisation; finite difference time-domain analysis; gain measurement; slot antennas; FDTD code; coaxially fed U-slot rectangular patch antenna; copolar pattern characteristics; crosspolar pattern characteristics; dual frequency characteristic; experimental results; experimental studies; far-field patterns; feed position; foam substrate; gain bandwidth; gain measurements; impedance bandwidth; measurements; patch width; simulation results; simulation studies; wideband characteristic;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19971334

Filename

667511