Analysis of a hemispherical dielectric resonator antenna with an airgap
- 1 October 1993
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Guided Wave Letters
- Vol. 3 (10) , 355-357
- https://doi.org/10.1109/75.242259
Abstract
A probe-fed hemispherical dielectric resonator antenna with an airgap of hemispherical shape between the dielectric and the ground plane is investigated theoretically by using a Green's function formulation. Input impedance of the efficiently radiating mode of TE/sub 111/ is calculated and analyzed. It is found that, with the presence of the airgap, the antenna bandwidth, obtained from the 3-dB impedance bandwidth, can be considerably enhanced. This study provides a new design for bandwidth enhancement of the dielectric resonator antenna.Keywords
This publication has 5 references indexed in Scilit:
- Resonance in a spherical-circular microstrip structure with an airgapIEEE Transactions on Microwave Theory and Techniques, 1993
- Input impedance of hemispherical dielectric resonator antennaElectronics Letters, 1991
- Effect of parasitic element on the characteristics of microstrip antennaIEEE Transactions on Antennas and Propagation, 1991
- Resonant hemispherical dielectric antennaElectronics Letters, 1984
- The resonant cylindrical dielectric cavity antennaIEEE Transactions on Antennas and Propagation, 1983