Title :
Directive dielectric resonator antenna excited by probe or narrow slot
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, QC, Canada
Abstract :
Dielectric resonator antenna (DRA) exciting a single mode of broadside radiation provides a gain of about 5 dBi. Here, directivity of the antenna and it corresponding gain is increased by staking more than one dielectric resonator on top of each others. Such arrangement acts such as the Yagi-Uda antenna. One director and two directors are used to enhance the antenna gain. The gain is increased by about 3.6 dBi in the case of two director antenna. Two methods of excitations are used. One is a probe excitation and the other is a narrow slot excitation. The two DRA antennas are machined and tested. In both cases, the antenna gain increases. Also, the matching bandwidth is increased by more than 10% over that of single DRA element.
Keywords :
antenna radiation patterns; dielectric resonator antennas; directive antennas; slot antennas; DRA antennas; Yagi-Uda antenna; antenna gain enhancement; broadside radiation single mode; directive dielectric resonator antenna; director antenna; matching bandwidth; narrow slot excitation; probe excitation; single DRA element; Antenna measurements; Antenna radiation patterns; Dielectric resonator antennas; Dielectrics; Optical resonators; Probes; Dielectric resonator antennas; Yagi-Uda DRA; probe excitation; slot excitation;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2012 IEEE
Conference_Location :
Santa Clara, CA
Print_ISBN :
978-1-4577-1153-4
DOI :
10.1109/RWS.2012.6175374
