Low-Profile Compact Dual-Band Unit Cell for Polarizing Surfaces Operating in Orthogonal Polarizations

Wenxing Tang; Salvador Mercader Pellicer; George Goussetis; Herve Legay; Nelson J. G. Fonseca

doi:10.1109/TAP.2016.2647691

Low-Profile Compact Dual-Band Unit Cell for Polarizing Surfaces Operating in Orthogonal Polarizations

Wenxing Tang, Salvador Mercader Pellicer, George Goussetis, Herve Legay, Nelson J. G. Fonseca

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Abstract

This paper introduces a novel periodic reflector which provides linear to circular polarization conversion in two frequency bands. Significantly, the reflector converts a slant 45o linearly polarized wave into two orthogonal circular polarizations over two separate frequency bands while further the unit cell dimensions are maintained below the critical grating lobe limit of half wavelength. Unlike previous designs providing this performance, which are based on linear dipole elements, miniaturization is here achieved by exploiting resonances in both TE and TM polarized waves. The operating principle of the polarizer is discussed and a parametric study is presented to derive design guidelines. A prototype working in the satellite Ku band has been designed and tested to validate the proposed design. The proposed polarizer can find applications in multiple beam satellite antenna systems in order to reduce the number of reflector apertures in a single-feed-per-beam configuration.

Original language	English
Pages (from-to)	1472-1477
Number of pages	6
Journal	IEEE Transactions on Antennas and Propagation
Volume	65
Issue number	3
Early online date	4 Jan 2017
DOIs	https://doi.org/10.1109/TAP.2016.2647691
Publication status	Published - Mar 2017

Keywords

Multiple-beam reflector antenna
satellite communications
polarization conversion
frequency selective surface
dual-band polarization

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10.1109/TAP.2016.2647691

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title = "Low-Profile Compact Dual-Band Unit Cell for Polarizing Surfaces Operating in Orthogonal Polarizations",

abstract = "This paper introduces a novel periodic reflector which provides linear to circular polarization conversion in two frequency bands. Significantly, the reflector converts a slant 45o linearly polarized wave into two orthogonal circular polarizations over two separate frequency bands while further the unit cell dimensions are maintained below the critical grating lobe limit of half wavelength. Unlike previous designs providing this performance, which are based on linear dipole elements, miniaturization is here achieved by exploiting resonances in both TE and TM polarized waves. The operating principle of the polarizer is discussed and a parametric study is presented to derive design guidelines. A prototype working in the satellite Ku band has been designed and tested to validate the proposed design. The proposed polarizer can find applications in multiple beam satellite antenna systems in order to reduce the number of reflector apertures in a single-feed-per-beam configuration.",

keywords = "Multiple-beam reflector antenna, satellite communications, polarization conversion, frequency selective surface, dual-band polarization",

author = "Wenxing Tang and {Mercader Pellicer}, Salvador and George Goussetis and Herve Legay and Fonseca, {Nelson J. G.}",

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AU - Fonseca, Nelson J. G.

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AB - This paper introduces a novel periodic reflector which provides linear to circular polarization conversion in two frequency bands. Significantly, the reflector converts a slant 45o linearly polarized wave into two orthogonal circular polarizations over two separate frequency bands while further the unit cell dimensions are maintained below the critical grating lobe limit of half wavelength. Unlike previous designs providing this performance, which are based on linear dipole elements, miniaturization is here achieved by exploiting resonances in both TE and TM polarized waves. The operating principle of the polarizer is discussed and a parametric study is presented to derive design guidelines. A prototype working in the satellite Ku band has been designed and tested to validate the proposed design. The proposed polarizer can find applications in multiple beam satellite antenna systems in order to reduce the number of reflector apertures in a single-feed-per-beam configuration.

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