Title :
A circularly polarized dielectric resonator antenna excited by an asymmetrical U-slot
Author :
Li, B. ; So, K.K. ; Leung, K.W.
Author_Institution :
Dept. of Electron. Eng,, City Univ. of Hong Kong, Kowloon, China
Abstract :
A circularly polarized (CP) low-profile dielectric resonator antenna excited by an asymmetrical U-slot is investigated theoretically and experimentally. The nonuniform orthogonal grids finite-difference-time-domain (FDTD) method with source independent resistive voltage source (RVS) model is adopted in the simulation. The return loss, input impedance, axial ratio, radiation pattern, and gain of the antenna are studied. The calculations compare fairly well with measurements.
Keywords :
Maxwell equations; antenna radiation patterns; dielectric resonator antennas; finite difference time-domain analysis; antenna gain; asymmetrical U-slot; axial ratio; circularly polarized antenna; finite-difference-time-domain method; input impedance; low-profile dielectric resonator antenna; nonuniform orthogonal grids; radiation pattern; return loss; source independent resistive voltage source; Antenna measurements; Antenna theory; Dielectric constant; Dielectric resonator antennas; Feeds; Finite difference methods; Impedance; Polarization; Time domain analysis; Voltage;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1220021
