Comparative study on the mutual coupling between different sized cylindrical dielectric resonators antennas and circular microstrip patch antennas

A systematic comparative study on the mutual coupling (S/sub 21/) between dielectric resonator antennas (DRAs) and microstrip patch antennas is presented. The mutual coupling between two cylindrical probe-fed DRAs is studied for different radius to height (a/L) ratios. It is found that the mutual co...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2005-03, Vol.53 (3), p.1011-1019
Main Authors: Chair, R., Kishk, A.A., Kai-Fong Lee
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Bandwidth
Dielectric constant
Dielectric resonator antennas
Dielectric resonator antennas (DRAs)
Dielectric substrates
Exact sciences and technology
Geometry
Microstrip antennas
Microstrip resonators
Mutual coupling
Patch antennas
Permittivity
Radiocommunications
Telecommunications
Telecommunications and information theory
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Summary:A systematic comparative study on the mutual coupling (S/sub 21/) between dielectric resonator antennas (DRAs) and microstrip patch antennas is presented. The mutual coupling between two cylindrical probe-fed DRAs is studied for different radius to height (a/L) ratios. It is found that the mutual coupling decreases with the radius to height ratio. Comparison between mutual coupling of probe-fed cylindrical DRAs and circular microstrip patch antennas with different dielectric substrates are also studied. The mutual coupling between DRAs is 2 dB stronger than between microstrip patch antennas when the patch is etched on a dielectric substrate of a dielectric constant close to the permittivity of the DRA. The mutual coupling of the circular patch antennas reduces with the dielectric constant of the substrate.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2004.842682