Optimized 90° Polarization Shift Step Twists for Ku, K and Ka Bands |
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| Authors: | Vasilis G Salis Sotirios A Mallios Ioannis G Tigelis and Aristidis S Theodorou |
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| Institution: | (1) Department of Physics, Applied Physics Division, Electronics Laboratory, National and Kapodistrian University of Athens, Building V, Panepistimiopolis, Zografou, 157 84 Athens, Greece;(2) INTRACOM S.A., Defense Sector, 19.2 km Markopoulou Avenue, 19002 Peania Athens, Greece |
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| Abstract: | 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. |
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| Keywords: | 90° polarization twists Rectangular waveguide twists Waveguide discontinuities Broadband twists |
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