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Hybrid monopole-DRAs using hemispherical/conical-shaped dielectric ring resonators: Improved ultrawideband designs
, B GUPTA, Y M M ANTAR
Published in IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
2012
Volume: 60
   
Issue: 1
Pages: 393 - 398
Abstract
Two geometries of dielectric ring resonator (DRR) have been investigated as new variants for designing ultrawideband hybrid monopole-DRAs (dielectric resonator antennas) with improved features. They are simply hemispherical and conical in shape and have been implemented individually. Hybrid monopole-DRA is actually a combined configuration using a grounded monopole surrounded by a small DRR touching the same ground plane. Compared to an earlier version using cylindrical DRR of same dielectric material, the proposed ones promise for about 25% larger impedance bandwidth maintaining identical gain and radiation properties. As much as 126% impedance bandwidth with consistent monopole type radiation and 2-4 dBi peak gain has been demonstrated using a set of prototypes shaped from dielectric rod with ε r = 10. Physical insight in to the ultrawideband operation along with a comprehensive design guideline is presented. © 2006 IEEE.
About the journal
JournalData powered by TypesetIEEE Transactions on Antennas and Propagation
PublisherData powered by TypesetIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
ISSN0018-926X
Open AccessNo