Title :
On improving coupling between a coplanar waveguide feed and a dielectric resonator antenna
Author :
Guo, Yong-Xin ; Luk, Kwai-Man
Author_Institution :
Inst. for Infocomm Res., Singapore, Singapore
Abstract :
A cylindrical dielectric resonator antenna fed by a coplanar waveguide is studied. By connecting a vertical strip at the end of the center strip of the coplanar waveguide, the input impedance matching of a low-permittivity dielectric resonator antenna can be improved substantially. Moreover, it offers an impedance bandwidth as wide as ∼22% and a maximum gain of ∼5.5 dBi. The measured radiation patterns are stable across the operating frequency range.
Keywords :
antenna feeds; coplanar waveguides; dielectric resonator antennas; electromagnetic coupling; impedance matching; permittivity; DRA; EM coupling; center strip; coplanar waveguide feed; cylindrical dielectric resonator antenna; frequency range; gain; impedance bandwidth; input impedance matching; low-permittivity dielectric resonator antenna; measured radiation patterns; vertical strip; Antenna feeds; Antenna measurements; Antenna radiation patterns; Bandwidth; Coplanar waveguides; Dielectric measurements; Dielectric resonator antennas; Frequency measurement; Impedance matching; Joining processes;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2003.814740
