Summary
International Symposium on Antennas and Propagation
2011
Session Number:FrP1
Session:
Number:FrP1-57
CP-generating Waveguide Polarizer Using Multi-Staged Elliptical Cross Sections
S. S. Yoon, J. H. Kim, J. W. Lee, T. K. Lee, W. K. Lee,
pp.-
Publication Date:2011/10/25
Online ISSN:2188-5079
Summary:
In this paper, CP-generating circular cylindrical waveguide polarizer using stepped discontinuities of elliptical interface between two waveguides is investigated and studied in terms of electrical performances such as return loss, radiation pattern, axial ratios, and cross polarization dealing with the purity level in circular polarization. By considering the interconnection of multistaged waveguides, impedance matching and phase differences of vertical and horizontal electric field inside waveguide have been accomplished with a reasonable generation of circular polarization. The proposed polarizer in this paper is designed to cover the X-band frequency including the link frequency of 8.13GHz in satellite communication. The obtained simulated results show that the proposed polarizer has good characteristics of return loss, axial ratios, and Xpolarization level over wide bandwidth.