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A Singly Fed Wideband Circularly Polarized Dielectric Resonator Antenna Using Concentric Open Half-Loops

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2 Author(s)
Sulaiman, M.I. ; Dept. of Electron. Eng., Univ. Kuala Lumpur, Kuala Lumpur, Malaysia ; Khamas, S.K.

A rectangular dielectric resonator antenna (DRA) with a broadband circular polarization (CP) radiation is presented using a single feed excitation. A simple feed method is proposed using an open half-loop antenna that consists of three metallic strips. Utilizing such an excitation has provided a circular polarization over a bandwidth of 7% that has been increased further to 13% by adding a concentric parasitic open half-loop in the structure. This has been achieved in conjunction with a 20% impedance matching bandwidth over the same frequency range. The configuration has been rigorously modeled using a method of moments (MoM) model. The computed and measured results are in good agreement.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:10 )