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An inward-fed two-arm Archimedean spiral antenna is proposed, which integrates a stripline feed network into one of the spiral arms. A broadband stripline tapered impedance transformer conformal to the spiral's winding provides a novel matching network between the input impedance of the spiral and the characteristic impedance of the stripline. The Dyson-style balun at the spiral's center converts the guided stripline mode to the radiating spiral mode. The transformation from a gap-fed design to a stripline-fed design is provided to illustrate the design process. Measured and simulated results for a probe-fed design operating from 2 to over 20 GHz are provided to illustrate the synthesis and performance of a demonstration antenna.
Published in:
Antennas and Wireless Propagation Letters, IEEE
(Volume:10
)
Date of Publication: 2011
- Page(s):
- 346 - 349
- ISSN :
- 1536-1225
- INSPEC Accession Number:
- 11968330
- Digital Object Identifier :
- 10.1109/LAWP.2011.2141971
- Product Type:
- Journals & Magazines
- Date of Publication :
- 11 April 2011
- Date of Current Version :
- 02 May 2011
- Issue Date :
- 2011
- Sponsored by :
- IEEE Antennas and Propagation Society
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