DocumentCode :
2941210
Title :
Polarization correction in dual-polarized phased arrays of flared notches
Author :
Kindt, Rick ; Taylor, Douglas
Author_Institution :
Radar Div., Naval Res. Lab., Washington, DC, USA
fYear :
2011
fDate :
3-8 July 2011
Firstpage :
1961
Lastpage :
1964
Abstract :
Though flared-notch radiators are capable of achieving very large bandwidths (10:1 or more) as radiating array elements, they are known to suffer from poor polarization purity when scanning in the diagonal plane (D-plane). This paper examines the polarization properties of dual-polarized arrays of flared notches as a function of frequency and the length/width ratio of the elements. Further, it is demonstrated through a combination of simulation and measurements that polarization degradation can largely be corrected for elements that have orthogonal feed ports. Though correctable, due to the nature of the polarization degradation that occurs in the D-plane, it is also shown that there is a limitation to the extent of correction that can be achieved.
Keywords :
antenna feeds; antenna phased arrays; antenna radiation patterns; electromagnetic wave polarisation; dual-polarized phased arrays; flared-notch radiators; orthogonal feed ports; polarization correction; polarization degradation; radiating array elements; Bandwidth; Degradation; Feeds; Finite element methods; Phased arrays; Polarization; Ultra wideband technology; cross polarization; flared notches; polarization degradation; vivaldi; wideband phased arrays;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
ISSN :
1522-3965
Print_ISBN :
978-1-4244-9562-7
Type :
conf
DOI :
10.1109/APS.2011.5996888
Filename :
5996888
Link To Document :
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