DocumentCode
1110853
Title
Varactor-diode loaded passive polarisation-agile patch antenna
Author
Haskins, P.M. ; Dahele, J.S.
Author_Institution
Sch. of Electr. Eng. & Sci., R. Mil. Coll. of Sci., Shrivenham
Volume
30
Issue
13
fYear
1994
fDate
6/23/1994 12:00:00 AM
Firstpage
1074
Lastpage
1075
Abstract
A passive polarisation-agile microstrip patch antenna has been developed. Using independently biased varactor diodes on the patch axes to tune or detune orthogonal modes, it can produce linear polarisation, or left or right hand circular polarisation according to the bias voltages. Crosspolar levels when operated in the linear state, and axial ratios in the circular state can be optimised by fine adjustment of the diode bias
Keywords
antenna radiation patterns; diodes; electromagnetic wave polarisation; microstrip antennas; microwave antennas; varactors; axial ratios; bias voltages; circular state; crosspolar levels; detune; diode bias; fine adjustment; independently biased varactor diodes; left hand circular polarisation; linear polarisation; linear state; microstrip patch antenna; orthogonal modes; passive polarisation-agile patch antenna; patch axes; right hand circular polarisation; tune; varactor-diode loaded;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19940720
Filename
294808
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