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A Linear Rectangular Dielectric Resonator Antenna Array Fed by Dielectric Image Guide With Low Cross Polarization

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3 Author(s)
Al-Zoubi, A.S. ; Dept. of Electr. Eng., Univ. of Mississippi, Oxford, MS, USA ; Kishk, A.A. ; Glisson, A.W.

Design of a linear array of rectangular dielectric resonator antennas (DRAs) fed by dielectric image guide (DIG) is presented. Coupling between the DIG and the DRAs is predicted using the effective dielectric constant method. In order to achieve a specific power distribution, the power coupled to each DRA is controlled by changing the spacing between the DRAs and the DIG. Cross polarization reduction is achieved by wrapping a conducting strip around the middle of the DRA without affecting the co-polarized radiation pattern. The antenna is fabricated and tested. Good agreement between the measured and computed results is obtained.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:58 ,  Issue: 3 )