Cross-Polarization Reduction of Linear-to-Circular Polarizing Reflective Surfaces

This letter proposes an efficient design process to reduce the cross polarization of linear-to-circular reflection polarizers illuminated by practical feeds. In particular, we propose a two-step process, where first a geometrical optimization of the unit cell is applied along one plane of the reflec...

Full description

Saved in:
Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 18; no. 7; pp. 1527 - 1531
Main Authors Mercader-Pellicer, Salvador, Goussetis, George, Medero, Gabriela M., Legay, Herve, Bresciani, Daniele, Fonseca, Nelson J. G.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Computer architecture
Cross polarization
Dipoles
Feeds
Frequency selective surfaces
Geometry
linear-to-circular polarizers
Optical surface waves
Optimization
Polarizers
reflectarrays
reflector antennas
Surface waves
Unit cell
Online AccessGet full text

Cover

More Information
Summary:This letter proposes an efficient design process to reduce the cross polarization of linear-to-circular reflection polarizers illuminated by practical feeds. In particular, we propose a two-step process, where first a geometrical optimization of the unit cell is applied along one plane of the reflector, followed by a progressive rotation of the unit cell in the orthogonal plane. An offset flat polarizer comprised of dipole unit cells fed by a standard gain horn has been used to illustrate the process. Significant improvements in cross-polarization discrimination are demonstrated by simulation. Two breadboards have been manufactured, and their response is compared in order to demonstrate the validity of the design process. Good agreement with measurements is observed corroborating the proposed technique.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2019.2921883