A Compact Hybrid Dielectric Resonator Antenna with a Meandered Slot Ring and Cavity Backing Offering Wideband Operation

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Authors
  1. Podilchak, S.K.
  2. Johnstone, J.C.
  3. Clénet, M.
  4. Antar, Y.M.M.
Corporate Authors
Defence Research and Development Canada, Ottawa Research Centre, Ottawa ON (CAN);Royal Military Coll of Canada, Kingston ONT (CAN) Dept of Electrical Engineering;Queen's Univ, Kingston ONT (CAN) Dept of Electrical and Computer Engineering
Abstract
This summary article proposes a new and compact cavity-backed antenna structure offering circular polarization where a dielectric resonator (DR) element is surrounded by a meandered circular slot ring etched in the antenna ground plane (90 mm by 90 mm) to improve gain and radiation performance values. In particular, antenna gain values are greater than 3 dBic from 1.10 GHz to 1.72 GHz defining a bandwidth of more than 35%. The DR for the antenna is cylindrical in shape with εr = 30 and excites four radiating HE11δ modes which are driven by four, quadrature fed aperture coupled slots. Such a compact implementation hybridizes operation of the DR with its meandered circular slot ring as well as the four aperture coupled slots. Measurements and simulations are in agreement and the proposed design technique to employ such a secondary meandered slot ring may also be useful to improve antenna gain and efficiency for other compact antenna implementations.
Keywords
antenne;résonateur dielectrique;antenne large bande
Report Number
DRDC-RDDC-2014-P108 — External Literature
Date of publication
21 Jan 2015
Number of Pages
2
DSTKIM No
CA039933
CANDIS No
800859
Format(s):
Electronic Document(PDF)

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