Split-Ring FSS Spiral Phase Plate

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Abstract

This letter gives the first report of a planar phase plate structure based on frequency selective surface (FSS) technology for the generation of helical far-field radiation patterns with circular polarization properties.The unit cell of the structure comprises two orthogonal split-ring resonators designed to ensure 180$^{\circ}$ phase shift between orthogonal transmission coefficients. This property is exploited to obtain progressive rotational phase shift within the structure and thus synthesize 360$^{\circ}$ spiral phase profile. Measured far-field radiation patterns demonstrate spiral phase front generation for 10-GHz circularly polarized waves transmitted through the structure.
Original languageEnglish
Pages (from-to)284-287
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Volume12
Early online date18 Feb 2013
DOIs
Publication statusPublished - 2013

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