Coplanar Waveguide Feed to the Hemispherical DRA

Author

Ghosh, Bratin ; Ghosh, Kunal ; Panda, Chandra Sekhar

Author_Institution

Dept. of Electron., Electr. & Commun. Eng., Indian Inst. of Technol., Kharagpur

Volume

57

Issue

5

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

1567

Lastpage

1571

Abstract

In this communication, several coplanar waveguide topologies to the hemispherical DRA are presented. It is seen that the inductive and the circular-loop CPW feed configurations offer the flexibility to excite the fundamental TE ₁₁₁ resonant mode of the hemispherical DRA close to the source free resonant frequency, due to the presence of metallization in the coupling region. Dual-band behavior is observed with the capacitive feed due to the DRA and slot resonant modes, which are displaced with respect to the unperturbed modes due to the uninterrupted slot. The radiation characteristics of the antenna are also explained.

Keywords

antenna feeds; coplanar waveguides; dielectric resonator antennas; coplanar waveguide; dielectric resonator antenna; dual-band behavior; fundamental TE resonant mode; hemispherical DRA; metallization; source free resonant frequency; Coplanar waveguides; Dielectric resonator antennas; Dual band; Feeds; Metallization; Permittivity; Reflection; Resonance; Resonant frequency; Topology; Capacitive; circular-loop; coplanar waveguide (CPW); dielectric resonator; inductive;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2009.2016794

Filename

4909428