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In this paper, a new dielectric resonator antenna (DRA) is introduced for wideband applications, where a simple L-shaped dielectric resonator (DR) is excited by a conformal inverted-trapezoidal patch connected to a microstrip line. It is observed that the impedance bandwidth can be expanded by using an inserted intermediate substrate, an L-shaped DR, and an inverted-trapezoidal patch feed mechanism. The experimental and numerical results were carried out and compared, showing a good agreement. The measured results demonstrate that the proposed DRA achieves an impedance bandwidth of about 71.4% for VSWR les 2, covering the frequency range from 3.87 to 8.17 GHz. Furthermore, this antenna provides a stable broadside radiation pattern across the operating bandwidth.
Published in:
Antennas and Propagation, IEEE Transactions on
(Volume:57
,
Issue:
1
)
Date of Publication: Jan. 2009
- Page(s):
- 271 - 274
- ISSN :
- 0018-926X
- INSPEC Accession Number:
- 10503016
- Digital Object Identifier :
- 10.1109/TAP.2008.2009783
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 04 March 2009
- Issue Date :
- Jan. 2009
- Sponsored by :
- IEEE Antennas and Propagation Society
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