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A HIGH GAIN DIELECTRIC RESONATOR LOADED PATCH ANTENNA

By S. Fakhte, H. Oraizi, and M. H. Vadjed-Samiei

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Abstract:
A dielectric resonator loaded patch antenna excited by a coaxial cable is proposed in this paper. The results from measurement show a wide impedance bandwidth of 57.1% from 3.75 GHz to 6.75 GHz and a peak gain of 11.5 dB at the center of frequency band with an average gain improvement of 3 dB over the frequency band in comparison with the common dielectric resonator antennas. These results are in good agreement with those obtained by the computer simulations. A simple study of the antenna shows that the aperture size increase is the cause of gain enhancement. A theoretical model based on the simulated gain results of reference antenna and its equivalent aperture is presented for the proposed antenna structure with good agreement with simulation and measurement results. The advantages of the proposed antenna are high gain with broad bandwidth, and low fabrication cost in comparison to other types of high gain DRAs having narrow bandwidths and complex structures.

Citation:
S. Fakhte, H. Oraizi, and M. H. Vadjed-Samiei, "A High Gain Dielectric Resonator Loaded Patch Antenna," Progress In Electromagnetics Research C, Vol. 30, 147-158, 2012.
doi:10.2528/PIERC12050813
http://www.jpier.org/pierc/pier.php?paper=12050813

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