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New half-hemispherical dielectric resonator antenna for broadband monopole-type radiation
, Y M M ANTAR
Published in -
2006
Volume: 54
   
Issue: 12
Pages: 3621 - 3628
Abstract
A new half-hemispherical dielectric resonator antenna (h-HDRA) is proposed and a two-element h-HDRA configuration is employed to design a broadband monopole-type radiator. Two half sections of a hemispherical DRA are employed to enhance the impedance bandwidth by introducing an additional resonant mode. Since the new geometry of an h-HDRA is studied here for the first time, it is characterized using simulation and experimental studies. Two closely spaced resonant modes, which in a two-element h-HDRA generate monopole-type radiation are investigated. Results for both the single and two-element h-HDRAs are presented. As much as 35% impedance bandwidth (S11 < -10 dB) with more than S dBi peak gain, 99.08% efficiency and monopole-type radiation pattern has been demonstrated using a prototype occupying a compact volume measuring 0.48λ0 by 0.2λ0 approximately, λ0 being the wave length corresponding to the center of the impedance bandwidth. © 2006 IEEE.
About the journal
JournalIEEE Transactions on Antennas and Propagation
Publisher-
ISSN0018-926X
Open AccessNo