Title :
Theory and Experiment of the Wideband Two-Layer Hemispherical Dielectric Resonator Antenna
Author :
Leung, K.W. ; So, K.K.
Author_Institution :
Wireless Commun. Res. Centre, City Univ. of Hong Kong, Hong Kong
fDate :
4/1/2009 12:00:00 AM
Abstract :
The two-layer hemispherical dielectric resonator antenna (DRA) excited by an annular slot is investigated. The slot excitation can be placed in the inner or outer dielectric layer, and the two configurations are studied and compared in this paper. Both problems were solved rigorously using the Green´s function approach and the method of moments. The maximum impedance bandwidth and a new bandwidth that considers the field pattern are investigated. Good agreement between the calculations, measurements, and HFSS simulations is obtained.
Keywords :
Green´s function methods; broadband antennas; dielectric resonator antennas; electric impedance; method of moments; slot antennas; Green´s function; HFSS simulations; annular slot; dielectric layer; field pattern; impedance bandwidth; method of moments; slot excitation; wideband two-layer hemispherical dielectric resonator antenna; Antenna measurements; Antenna radiation patterns; Antenna theory; Bandwidth; Broadband antennas; Dielectric resonator antennas; Impedance; Microstrip antennas; Moment methods; Slot antennas; Annular slot; dielectric resonator antenna; moment method;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2009.2015861
