Title :
Modal analysis of dielectric loaded coaxial probe fed circular waveguide radiator
Author :
Safavi-Naini, S. ; Ameri, H.
Author_Institution :
Dept. of Electr. Eng., Tehran Univ., Iran
Abstract :
An almost rigorous procedure for analyzing dielectric resonator antennas in cylindrical enclosures is presented. The resonant frequency and radiation pattern of a circular waveguide radiator have been analyzed by the method presented. The primary consideration in this special design has been the bandwidth. Experimental results and theoretical predictions for two cases ( in =4,12) are shown. As is evident from this comparison, the method has a reasonable accuracy. In both cases, a piecewise sinusoidal distribution for the probe current has been assumed. In general a limited number of modes in both inhomogeneous and homogeneous regions provides sufficiently accurate results for many practical cases.<>
Keywords :
antenna feeders; antenna radiation patterns; circular waveguides; dielectric resonators; dielectric-loaded antennas; probes; waveguide antennas; bandwidth; circular waveguide radiator; coaxial probe fed radiator; cylindrical enclosures; dielectric loaded antenna; dielectric resonator antennas; homogeneous regions; inhomogeneous region; modal analysis; piecewise sinusoidal distribution; probe current; radiation pattern; resonant frequency; Coaxial components; Coupled mode analysis; Dielectric resonator antennas; Microwave antennas; Microwave theory and techniques; Modal analysis; Planar waveguides; Probes; Reflection; Waveguide components;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.175222
