A Novel Cup-Shaped Inverted Hemispherical Dielectric Resonator Antenna for Wideband Applications

Author

Mukherjee, Biswanath ; Patel, Pragati ; Mukherjee, Jayanta

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Mumbai, Mumbai, India

Volume

12

fYear

2013

fDate

2013

Firstpage

1240

Lastpage

1243

Abstract

A novel cup-shaped dielectric resonator antenna (DRA) geometry based on inverted hemispherical dielectric resonator antenna (HDRA) is proposed and investigated. The material used for investigation is Rogers TMM10, which is a ceramic thermoset polymer composite material having a dielectric constant of ε_r = 9.2. The cup-shaped geometry offers a wideband of 83% impedance bandwidth for dB at 2.3 GHz. Two modes have also been investigated which show the presence of TM₁₀₁-like mode and TM_01δ-like mode of the cylindrical DRA. The peak gain observed is 4.5 dBi at around 2.3 GHz. The measured results show that the efficiency is above 90% for the bandwidth of operation.

Keywords

broadband antennas; ceramics; dielectric resonator antennas; filled polymers; Rogers TMM10; TM_01δ-like mode; TM₁₀₁-like mode; ceramic thermoset polymer composite material; cup shaped geometry; cup shaped inverted hemispherical dielectric resonator antenna; cylindrical DRA; dielectric constant; frequency 2.3 GHz; impedance bandwidth; wideband application; Bandwidth; Broadband antennas; Dielectric resonator antennas; Dielectrics; Geometry; Probes; Resonant frequency; Bandwidth; efficiency; gain; hemispherical dielectric resonator antenna; modes;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2013.2283213

Filename

6615942