DocumentCode :
2695462
Title :
Aperture-coupled prolate spheroidal dielectric resonator antenna
Author :
Song, Y. ; Tadjalli, A. ; Sebak, A. ; Denidni, Tayeb Ahmed
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
fYear :
2005
fDate :
3-8 July 2005
Firstpage :
218
Abstract :
Dielectric resonator antennas (DRAs) offer a number of advantages, amongst which is offering a wider bandwidth than the microstrip patch antennas commonly used at the same frequency. The shape of DRAs can take different forms, such as rectangular, hemispherical and cylindrical. We rigorously study the aperture-coupled prolate hemispheroidal DRA excited at the fundamental broadside mode. An analytical solution for the radiation by a prolate hemispheroidal DRA using a dyadic Green´s function technique is presented. Compared with hemispherical DRAs, hemispheroidal DRAs add one more freedom of design in terms of different semiaxes dimensions and may lead to a simple feed mechanism for generating circularly polarized waves. Another parameter that may lead to better results is the greater diversity of mode excitation than hemispherical DRAs have. We consider a prolate hemispheroidal DRA excited by a slot aperture. The analytical development of the solution together with various numerical results are presented and discussed.
Keywords :
Green´s function methods; antenna feeds; antenna radiation patterns; antenna theory; dielectric resonator antennas; electromagnetic wave polarisation; DRA; aperture-coupled prolate hemispheroidal DRA; aperture-coupled prolate spheroidal dielectric resonator antenna; broadside mode; circularly polarized waves; dyadic Green function; feed mechanism; hemispherical DRA; mode excitation; radiation patterns; semiaxes dimensions; slot aperture; Aperture antennas; Bandwidth; Dielectric resonator antennas; Feeds; Frequency; Green´s function methods; Microstrip antennas; Microstrip resonators; Patch antennas; Shape;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
Type :
conf
DOI :
10.1109/APS.2005.1552783
Filename :
1552783
Link To Document :
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