Bandwidth enhancement and frequency tuning of the dielectric resonator antenna using a parasitic slot in the ground plane

Author

So, K.K. ; Leung, K.W.

Author_Institution

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

Volume

53

Issue

12

fYear

2005

Firstpage

4169

Lastpage

4172

Abstract

The slot-fed hemispherical dielectric resonator antenna (DRA) with a parasitic rectangular slot in the ground plane is studied in this paper. It is found that the length and position of the parasitic slot can be used to widen the DRA bandwidth or to tune the DRA frequency. The exact DRA Green´s function is used in the formulation, and the unknown slot currents are solved using the method of moments. Measurements were carried out to verify the calculations, and good agreement between theory and experiment is obtained.

Keywords

Green´s function methods; antenna feeds; broadband antennas; dielectric resonator antennas; method of moments; rectangular waveguides; slot antennas; DRA; Green´s function; antenna feed; frequency tuning; ground plane; hemispherical dielectric resonator antenna; method of moment; parasitic rectangular slot; wide-band antenna; Bandwidth; Broadband antennas; Dielectric constant; Dielectric losses; Dielectric resonator antennas; Frequency; Moment methods; Slot antennas; Tuning; Wideband; Dielectric resonator antenna (DRA); frequency tuning; parasitic slot; wide-band antenna;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2005.860002

Filename

1550001