MUTUAL COUPLING BETWEEN RECTANGULAR DIELECTRIC RESONATOR ANTENNA ELEMENTS

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Authors
  1. Henry, B.
  2. Petosa, A.
  3. Antar, Y.M.M.
  4. Morin, G.A.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
Dielectric resonator antennas (DRAs) have been suggested as potentially efficient antennas for use in Personal Communication Systems, Global Positioning Systems and wireless computer networks. The offer several advantages, such as high efficienty, large bandwidth, low profile, small size, ease of fabrication, and low production cost. This paper examines characteristics of rectangular DRAs, both as individual radiating elements as well as elements in array environments. Numerical methods are used to obtain detailed information with respect to the resonant frequency, bandwidth, scattering parameters, input impedance, field structures and radiation patterns on which DRA design is based. This obtained information is then used to help in understanding and quantizing the interaction between elements in close proximity, i.e. mutual coupling. This coupling analysis provides important information for the array design process, as well as the necessary information required to positively exploit these coupling characteristics. The simulation software provides data that very closely matches both experimentation and theoretical models. Mutual coupling measurements indicate that, beyond a spacing of lambda/2, there is very little mutual interaction. However, this mutual coupling was exploited at lesser distances with parasitically coupled dielectric elements. TRUNCATED
Keywords
Dielectric Resonator Antenna (DRA);Reflector antennas
Report Number
DREO-1333 —
Date of publication
01 May 1998
Number of Pages
144
DSTKIM No
99-00149
CANDIS No
509994
Format(s):
Hardcopy;Document Image stored on Optical Disk

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