Monopole Antenna Loaded by a Stepped-Radius Dielectric Ring Resonator for Ultrawide Bandwidth

Author

Ozzaim, Cengiz

Author_Institution

Dumlupinar Univ., Kutahya, Turkey

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

843

Lastpage

845

Abstract

A coax-fed thin-wire monopole antenna loaded by an annular cylindrical dielectric ring resonator (DRR) containing a step in its outer radius is studied numerically. The results obtained with computations based on bodies of revolution (BoR) followed by the method of moments (MoM) procedure are compared to the results of commercially available software tools for verification. The new hybrid antenna can easily offer a fractional bandwidth up to 110% for the magnitude of the input reflection coefficient, | S₁₁| <; -10 dB. The | S₁₁| response of the newly proposed antenna shows an additional resonance compared to its cylindrical ring counterpart without the step, resulting in at least 10% larger impedance bandwidth.

Keywords

antenna feeds; dielectric resonator antennas; method of moments; monopole antennas; ultra wideband antennas; UWB antenna; annular cylindrical dielectric ring resonator; bodies of revolution; coax-fed thin-wire monopole antenna; method of moments procedure; stepped-radius dielectric ring resonator; ultrawide bandwidth; Bandwidth; Dielectric resonator antennas; Dielectrics; Resonant frequency; Ultra wideband antennas; Dielectric resonator antenna (DRA); quarter-wave monopole; ultrawideband (UWB);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2163351

Filename

5967882