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An aperture-coupled reflectarray element giving a full phase tuning range with a single varactor diode is proposed in this paper for pattern reconfigurability applications. The full phase agility is achieved by a proper optimization of the phase tuning line, thus providing an alternate inductive/capacitive effect able to avoid the use of two varactor diodes, usually adopted in similar existing configurations. The proposed active element structure is adopted to design a demonstrative reflectarray prototype of 3 × 15 radiators. Furthermore, an own synthesis procedure is applied to obtain the proper biasing voltages giving the prescribed H-plane field. Test examples of beam-scanning, multibeam, and shaped-beam patterns are discussed to demonstrate the effectiveness of the approach.
Published in:
Antennas and Propagation, IEEE Transactions on
(Volume:61
,
Issue:
2
)
Date of Publication: Feb. 2013
- Page(s):
- 635 - 645
- ISSN :
- 0018-926X
- INSPEC Accession Number:
- 13287843
- Digital Object Identifier :
- 10.1109/TAP.2012.2226229
- Product Type:
- Journals & Magazines
- Date of Publication :
- 24 October 2012
- Date of Current Version :
- 30 January 2013
- Issue Date :
- Feb. 2013
- Sponsored by :
- IEEE Antennas and Propagation Society
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