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CIRCULARLY POLARIZED SINGLE FEED HEMISPHERICAL DIELECTRIC RESONATOR ANTENNA FOR WI-MAX APPLICATIONS

By A. R. Anu, P. Abdulla, P. M. Jasmine, and T. K. Rekha

Full Article PDF (944 KB)

Abstract:
Concentric circular slots coupled hemispherical dielectric resonator antenna fed by a modified microstrip line for circular polarization is investigated. By adjusting the position of the hemispherical dielectric resonator antenna and the slot properly, the resonance of the slot and the antenna is merged to obtain wider axial ratio bandwidth. Parametric studies have been done on the effect of changing the DRA position on impedance band and axial ratio band. The circular polarization achieved by the antenna offers a very good 10 dB impedance bandwidth of 27.379% and a 3 dB axial ratio bandwidth of 640 MHz. The maximum gain in the operational band is 7.3 dBi. The antenna is suitable for Wi-Max applications.

Citation:
A. R. Anu, P. Abdulla, P. M. Jasmine, and T. K. Rekha, "Circularly Polarized Single Feed Hemispherical Dielectric Resonator Antenna for Wi-Max Applications," Progress In Electromagnetics Research M, Vol. 92, 21-30, 2020.
doi:10.2528/PIERM20022401

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