Title :
Measurement of radiation efficiency of dielectric resonator antennas
Author :
Mongia, R.K. ; Ittipiboon, A. ; Cuhaci, M.
Author_Institution :
Communication Res. Centre, Ottawa, Ont., Canada
fDate :
3/1/1994 12:00:00 AM
Abstract :
Radiation efficiency (due to conduction and dielectric losses) of dielectric resonator antennas has been measured. Results show that for dielectric resonators placed directly on a metallic plane, the conduction losses are quite small. A radiation efficiency of >98% has been measured for dielectric resonator antennas operated in the dominant hybrid (HE/sub 11/spl delta//) mode. Theoretical considerations show scope of further improvement in the radiation efficiency by choosing optimum resonator parameters.<>
Keywords :
antenna radiation patterns; dielectric resonators; microwave antennas; 3 to 4 GHz; 98 percent; HE/sub 11/spl delta// mode; conduction losses; dielectric losses; dielectric resonator antennas; dominant hybrid mode; metallic plane; optimum resonator parameters; radiation efficiency; Antenna measurements; Conducting materials; Conductors; Dielectric loss measurement; Dielectric losses; Dielectric measurements; Dielectric resonator antennas; Loss measurement; Probes; Q factor;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
