Optimized 90° Polarization Shift Step Twists for Ku, K and Ka Bands

  • Vasilis G. Salis
  • Sotirios A. Mallios
  • Ioannis G. Tigelis
  • Aristidis S. Theodorou


Optimized models for 90° polarization shift step twists for Ku, K and Ka bands are presented. The cross-section of the waveguide employed is similar to that of a rectangular one, with the difference that the walls of the shorter side are part of a circular one with the proper diameter. The optimized models have been found using the CST Microwave Studio simulation tool and in all cases the return loss is kept below -20 dB for a wide range of frequency spectrum. Two examples are given, one for Ku band and the other for K and Ka ones.


90° polarization twists Rectangular waveguide twists Waveguide discontinuities Broadband twists 


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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Vasilis G. Salis
    • 1
  • Sotirios A. Mallios
    • 1
  • Ioannis G. Tigelis
    • 1
  • Aristidis S. Theodorou
    • 2
  1. 1.Department of Physics, Applied Physics DivisionElectronics Laboratory, National and Kapodistrian University of AthensAthensGreece
  2. 2.INTRACOM S.A.AthensGreece

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