Referenced Items are not available for this document.
The objective of the present study is to improve the bandwidth of the dielectric resonator antenna (DRA) excited by a coaxial probe by using a stacked DRA configuration above an infinite ground plane. The DRA is axisymmetric and a coaxial probe is placed off the antenna axis to excite the HEM11δ mode in the DRA, resulting in a broadside radiation pattern. A surface integral equation formulation and the method of moments are used for the numerical analysis. The input impedance and the far field radiation patterns have been computed and the effects of different parameters on the antenna performance have been investigated. With the proper excitation and selection of the resonator parameters, a bandwidth of 35% has been achieved for the stacked DRA configuration based on a -10 dB reflection coefficient on a 50 Ω-transmission line. An equivalent circuit model is postulated to describe the dual-resonance behavior of the stacked antenna system.
Published in:
Antennas and Propagation, IEEE Transactions on
(Volume:51
,
Issue:
8
)
Date of Publication: Aug. 2003
- Page(s):
- 1996 - 2006
- ISSN :
- 0018-926X
- INSPEC Accession Number:
- 7718451
- Digital Object Identifier :
- 10.1109/TAP.2003.814735
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 11 August 2003
- Issue Date :
- Aug. 2003
- Sponsored by :
- IEEE Antennas and Propagation Society
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