Title :
Circularly polarised low-profile rectangular dielectric-resonator antenna: FD-TD and experimental results
Author_Institution :
Dept. of Electron., Macquarie Univ., Sydney, NSW, Australia
Abstract :
Theoretical and experimental results for a circularly polarised (CP), rectangular, low-profile, dielectric-resonator (DR) antenna are presented. The DR is fed by a 50 /spl Omega/ microstrip line through a single aperture. The measured 3 dB axial-ratio bandwidth in the boresight direction is 14.35-14.80 GHz (3%). At 14.75 GHz, the measured input reflection coefficient is -28 dB; the measured axial ratio in one elevation plane is close to 3 dB over 110/spl deg/ but it increases more rapidly with the elevation angle in the orthogonal elevation plane. The theoretical patterns compare fairly well with the measurements.
Keywords :
antenna feeds; antenna radiation patterns; antenna testing; dielectric resonators; electromagnetic wave polarisation; finite difference time-domain analysis; microstrip lines; 14.35 to 14.80 GHz; 14.75 GHz; 3 dB axial-ratio bandwidth; 50 ohm; FDTD; boresight direction; circularly polarised low profile antenna; elevation plane; experimental results; measured axial ratio; measured input reflection coefficient; microstrip line; orthogonal elevation plane; rectangular dielectric resonator antenna; single aperture; theoretical antenna patterns; Antenna measurements; Antenna theory; Aperture antennas; Bandwidth; Dielectric measurements; Dielectric resonator antennas; Dielectric substrates; Fabrication; Microstrip; Polarization;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.549665
