Cavity-restrained multistacked dielectric omnidirectional antenna for microwave and millimetre-wave wireless communications

Author

An, H. ; Wang, Tao ; Bosisio, Renato G. ; Wu, Kaijie

Author_Institution

Ecole Polytech. de Montreal, Que.

Volume

30

Issue

25

fYear

1994

fDate

12/8/1994 12:00:00 AM

Firstpage

2086

Lastpage

2087

Abstract

A novel microwave omnidirectional antenna is proposed for wireless communications. This antenna is constructed with cavity-restrained multistacked dielectric discs. Vertical polarised omnidirectional radiation patterns are obtained from radiative ring slots in the side wall of dielectric-metal cavities operating in the TM_01δ mode. High omnidirectional gain is realised with stacked cavities with multiradiative slots. Ring slots between the adjacent cavities are used to ensure the excitation of the desired radiating mode in phase, which actually eliminates the feed network. A special technique is adopted for excitation of the antenna from the coaxial line, with which very good matching is achieved

Keywords

antenna radiation patterns; cavity resonators; dielectric-loaded antennas; electromagnetic wave polarisation; microwave antennas; millimetre wave antennas; TM_01δ mode; cavity-restrained type; coaxial line excitation; dielectric-metal cavities; matching; microwave wireless communications; millimetre-wave wireless communications; multiradiative slots; multistacked dielectric antenna; omnidirectional antenna; radiative ring slots; vertical polarised radiation patterns;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19941473

Filename

350160