Analysis and Design of Waveguide Iris Polarizer for Rotation of Polarization Plane

편파면 회전을 위한 도파관 아이리스 편파기 설계 분석

  • Yang, Doo-Yeong (Dept. of Telecommunication Engineering, Jeju National University) ;
  • Lee, Min-Soo (Dept. of Telecommunication Engineering, Daejin University)
  • 양두영 (제주대학교 통신공학과) ;
  • 이민수 (대진대학교 통신공학과)
  • Received : 2012.04.27
  • Accepted : 2012.07.12
  • Published : 2012.07.31


In this paper, the simplified design methodology for rotation of polarization plane using a square waveguide is proposed. In order to optimize the characteristics of $180^{\circ}$ polarizer operating from 14.3GHz to 14.8GHz in Ku-band, the modified mode matching method and piecewise power tower interpolation are applied to the polarizer design. The optimized results show that the frequency bandwidth in VSWR<2 has covered 500MHz in the Ku-band and phase difference between two orthogonal modes $TE_{10}$and $TE_{01}$ is $180^{\circ}{\pm}1^{\circ}$ in the range of 14.3GHz~14.8GHz. The cross polarization loss has obtained below 40dB and the insertion loss has 0.1dB in the passband. Therefore, the proposed polarizer is suitable for practical Ku-band system requiring the low VSWR and compact size.


Square waveguide;Modified mode matching;Piecewise power tower interpolation;$180^{\circ}$ polarizer


Supported by : 대진대학교


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