Design of thin circular polarizers

A circular polarizer is a surface or a cascade of surfaces that converts linearly polarized waves into circularly polarized waves. In this paper, a simple method is proposed to model and design these surfaces using transmission line circuit theory. This technique also permits to reduce spacing betwe...

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Bibliographic Details
Main Authors: Joyal, Marc-Andre, Laurin, Jean-Jacques
Format: Conference Proceeding
Language:English
Subjects:
Antennas and propagation
Arrays
Bandwidth
Integrated circuit modeling
Load modeling
Surface impedance
Surface waves
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Description
Summary:A circular polarizer is a surface or a cascade of surfaces that converts linearly polarized waves into circularly polarized waves. In this paper, a simple method is proposed to model and design these surfaces using transmission line circuit theory. This technique also permits to reduce spacing between surfaces as desired. In this way, thinner circular polarizers can be made. A conventional meander-line circular polarizer (spacing of λ/4 between its surfaces) made of three surfaces is designed and compared with a new "hybrid" circular polarizer having half the thickness. Results are shown and compared.
ISSN:1522-3965
1947-1491
DOI:10.1109/APS.2011.5997070