DocumentCode :
272633
Title :
A Reflectarray-Based Dual-Surface Reflector Working in Circular Polarization
Author :
Joyal, Marc-André ; El Hani, Rachid ; Riel, Mathieu ; Demers, Yves ; Laurin, Jean-Jacques
Author_Institution :
Poly-Grames Res. Center, Ecole Polytech. de Montreal, Montréal, QC, Canada
Volume :
63
Issue :
4
fYear :
2015
fDate :
Apr-15
Firstpage :
1306
Lastpage :
1313
Abstract :
This paper presents the design of a dual-surface reflector (DSR) antenna working in dual circular polarization (CP). This DSR consists in a linearly polarized dual-gridded reflector (DGR) that is made of a solid parabolic reflector on which a reflectarray that reflects horizontal polarization (HP) and is transparent to the vertical polarization (VP) is affixed. The conversion from linear polarization (LP) to CP of this antenna is realized by introducing a three-layer meander-line circular polarizer optimized for oblique incidence. The antenna system was designed to generate two main beams in different directions and orthogonal CPs. This antenna has been fabricated and characterized. For the two polarizations, the realized gain is higher than 30 dB with a cross-polarization discrimination (XPD) higher than 27 dB in the 18-20 GHz frequency band.
Keywords :
microwave antennas; polarisation; reflector antennas; CP; DGR; DSR antenna working; HP; LP; VP; XPD; antenna system; circular polarization; cross polarization discrimination; dual circular polarization; frequency 18 GHz to 20 GHz; gain 27 dB; horizontal polarization; linear polarization; linearly polarized dual gridded reflector; meander line circular polarizer; oblique incidence; reflectarray based dual surface reflector working; solid parabolic reflector; vertical polarization; Antenna radiation patterns; Feeds; Insertion loss; Polarization; Prototypes; Solids; Circular polarization; Circular polarization (CP); dual-gridded reflector; dual-gridded reflector (DGR); dual-surface reflector; dual-surface reflector (DSR); impedance sheets; meander-line polarizers; periodic structures; reflectarray;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2014.2388204
Filename :
7001643
Link To Document :
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