Axial ratio analysis of single-feed circularly polarized resonant antennas

Anda Raluca Guraliuc, Alice Buffi, Roberto Caso and Paolo Nepa

Journal of Electromagnetic Waves and Applications, 2014, vol. 28, issue 6, 716-728

Abstract: An unusual axial ratio analysis based on a quantitative study of the relative magnitude of the far-field radiated by each one of the two orthogonal quasi-degenerate modes excited in a single-feed circularly polarized resonant antenna is presented. Such analysis can be applied to those single-feed circularly polarized resonant antennas whose radiating element layout exhibits at least one symmetry plane. The proposed quantitative analysis gives to the antenna designer more information and physical insights than a conventional parametric analysis of the axial ratio behaviour versus frequency. As an example, the proposed approach is applied to a number of circularly polarized antennas presented in the open literature.

Date: 2014
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DOI: 10.1080/09205071.2014.885399

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