Mutual Coupling Reductions of Dielectric Resonator Antennas without Extra Circuits

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Abstract

This paper describes an effective strategy to reduce the mutual couplings of dielectric resonator antennas without using extra circuits. The strategy is enabled by etching an elliptical cylinder in a cube-shaped dielectric resonator along its diagonal direction. By optimizing the dimension and location of the elliptical cylinder, the mutual coupling of the orthogonal polarizations of the dielectric resonator antenna can be effectively reduced. For demonstration, a cube-shaped dielectric resonator antenna operating at 5.8 GHz is configured with a proper elliptical cylinder drilled in the right position. The simulated results demonstrate the mutual couplings of the orthogonal polarizations can be reduced to -25 dB from 5.6 to 5.95 GHz, where an average of 8 dB mutual coupling reduction can be obtained compared to the one without the ellipse cylinder drilled. The radiation patterns, realized gains, and total efficiencies of the dielectric resonator antenna with the elliptical cylinder drilled can still be maintained, verifying the effectiveness of the proposed strategy to reduce the mutual coupling.
OriginalsprogEngelsk
Titel17th European Conference on Antennas and Propagation, EuCAP 2023
Antal sider4
ForlagIEEE
Publikationsdatomaj 2023
Artikelnummer10133143
ISBN (Trykt)978-1-6654-7541-9
DOI
StatusUdgivet - maj 2023
Begivenhed2023 17th European Conference on Antennas and Propagation (EuCAP) - Florence, Italien
Varighed: 26 mar. 202331 mar. 2023

Konference

Konference2023 17th European Conference on Antennas and Propagation (EuCAP)
Land/OmrådeItalien
ByFlorence
Periode26/03/202331/03/2023

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