Title :
Frequency tuning of the dielectric resonator antenna using a loading disk
Author :
Ng, H.K. ; Leung, K.W.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China
Abstract :
A rigorous analysis is done for the excitation of a hemispherical dielectric resonator antenna (DRA) loaded by a circular disk. The disk is placed on the top of the DRA for tuning the operating frequency. The method of moments (MoM) is used to solve the unknown currents, from which the input impedance and radiation field pattern of the configuration are found. Reasonable agreement between theory and experiment is obtained.
Keywords :
antenna accessories; antenna radiation patterns; antenna theory; dielectric resonator antennas; electric current; electric impedance; method of moments; microwave antennas; tuning; 3 to 4 GHz; MoM; currents; frequency tuning; hemispherical DRA; hemispherical dielectric resonator antenna; input impedance; loading disk; method of moments; radiation field pattern; Dielectric constant; Dielectric resonator antennas; Frequency; Impedance; Loaded antennas; Message-oriented middleware; Microstrip; Moment methods; Probes; Tuning;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1329863
