Wideband Omnidirectional Circularly Polarized Dielectric Resonator Antenna With Parasitic Strips
- 13 April 2012
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 60 (6), 2992-2997
- https://doi.org/10.1109/tap.2012.2194678
Abstract
A wideband omnidirectional circularly polarized (CP) rectangular dielectric resonator antenna (DRA) is investigated in this communication. An inclined slot, loaded by a parasitic conducting strip, is fabricated on each sidewall of the DRA. The parasitic strips can excite a CP mode, which combines with the CP DRA mode to provide a wideband axial-ratio (AR) bandwidth of more than 25%. To fully utilize the increased AR bandwidth, the impedance bandwidth is also broadened by introducing a hollow cylinder at the center of the DRA. The hollow region is also used to accommodate a coaxial probe that excites the antenna. The reflection coefficient, AR, radiation pattern, antenna gain, and efficiency of the antenna are studied, and reasonable agreement between the measured and simulated results is observed. A parametric study was also carried out to characterize the proposed wideband CP omnidirectional antenna.Keywords
This publication has 15 references indexed in Scilit:
- Omnidirectional Linearly and Circularly Polarized Rectangular Dielectric Resonator AntennasIEEE Transactions on Antennas and Propagation, 2011
- UWB Dielectric Resonator Antenna Having Consistent Omnidirectional Pattern and Low Cross-Polarization CharacteristicsIEEE Transactions on Antennas and Propagation, 2011
- A Wideband Circularly Polarized Conical-Beam Patch AntennaIEEE Transactions on Antennas and Propagation, 2006
- Coplanar-waveguide-fed slot-coupled rectangular dielectric resonator antennaIEEE Transactions on Antennas and Propagation, 2002
- Cross-slot-coupled microstrip antenna and dielectric resonator antenna for circular polarizationIEEE Transactions on Antennas and Propagation, 1999
- Research on circularly polarized conical-beam antennasIEEE Antennas and Propagation Magazine, 1997
- Circularly polarized conical patterns from circular microstrip antennasIEEE Transactions on Antennas and Propagation, 1984
- The Electric-Dipole Resonances of Ring Resonators of Very High Permittivity (Short Papers)IEEE Transactions on Microwave Theory and Techniques, 1976
- A near-isotropic circulary polarized antenna for space vehiclesIEEE Transactions on Antennas and Propagation, 1965
- A Method of Producing Broad-Band Circular Polarization Employing an Anisotropic DielectricIEEE Transactions on Microwave Theory and Techniques, 1957