Linear-/Circular-Polarization Designs of Dual-/Wide-Band Cylindrical Dielectric Resonator Antennas

Author

Fang, Xiao Sheng ; Leung, Kwok Wa

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China

Volume

60

Issue

6

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

2662

Lastpage

2671

Abstract

Linear-/circular-polarization designs of the dual-/wide-band cylindrical dielectric resonator antennas (DRAs) are presented. The HEM₁₁₁ and HEM₁₁₃ modes of the cylindrical DRA are utilized to design the dual-mode cylindrical DRA. A wideband antenna can be obtained by merging the two resonant modes. To facilitate the designs, new engineering formulas that determine the dimensions of the dual-mode cylindrical DRA are found for the first time. They are obtained by using the covariance matrix adaptation evolutionary strategy (CMA-ES). Design examples for the dual-/wide-band cylindrical DRAs are given for both the linearly and circularly polarized cases. Ansoft HFSS was used to simulate the DRAs and the simulations were verified with our measurements. Good agreement between the measured and simulated results is observed.

Keywords

broadband antennas; covariance matrices; dielectric resonator antennas; electromagnetic wave polarisation; Ansoft HFSS; CMA-ES; HEM₁₁₁ modes; HEM₁₁₃ modes; covariance matrix adaptation evolutionary strategy; dual-wideband cylindrical DRA; dual-wideband cylindrical dielectric resonator antennas; engineering formulas; linear-circular-polarization designs; resonant modes; Antenna measurements; Dielectrics; Dual band; Frequency measurement; Gain; Moment methods; Resonant frequency; Circular polarization; cylindrical dielectric resonator antennas; dualband antennas; linear polarization; wideband antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2012.2194682

Filename

6183469