Cavity-restrained multistacked dielectricomnidirectional antenna for microwave andmillimetre-wave wireless communications
- 8 December 1994
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 30 (25) , 2086-2087
- https://doi.org/10.1049/el:19941473
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 TM01δ 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
This publication has 2 references indexed in Scilit:
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