Bandwidth enhancement of the cavity resonance antenna (CRA) using multiple dielectric superstrate layers

Author

Al-Tarifi, Muhannad A. ; Anagnostou, Dimitris E. ; Amert, Anthony K. ; Whites, Keith W.

Author_Institution

South Dakota Sch. of Mines & Technol., Rapid City, SD, USA

fYear

2011

fDate

5-10 June 2011

Firstpage

1

Lastpage

4

Abstract

The ray-tracing method is applied to study the radiation of a cavity resonance antenna (CRA) with both single and multiple dielectric superstrate layers. The behavior of the broadside directivity is investigated by analyzing the reflection phase of the antenna superstrates. To enhance the bandwidth of the CRA and maintain its large broadside directivity, a multilayered superstrate of an increasing reflection phase with frequency is presented. When compared to the single-layered CRA, a bandwidth enhancement of more than 100% is attained using a multilayered CRA of three superstrate slabs. Theoretical results are validated by simulations using commercial numerical electromagnetics software.

Keywords

antenna radiation patterns; cavity resonators; ray tracing; resonance; antenna superstrates; bandwidth enhancement; broadside directivity; cavity resonance antenna; multiple dielectric superstrate layer; numerical electromagnetics software; ray-tracing method; reflection phase; superstrate slabs; Bandwidth; Cavity resonators; Dielectrics; Feeds; Reflection; Resonant frequency; Broadband antennas; cavity resonators; directive antennas; electromagnetic propagation; electromagnetic reflection; leaky wave antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International

Conference_Location

Baltimore, MD

ISSN

0149-645X

Print_ISBN

978-1-61284-754-2

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2011.5972944

Filename

5972944