TY - JOUR
TI - Optimized 90°polarization shift step twists for Ku, K and Ka bands
AU - Salis, V.G.
AU - Mallios, S.A.
AU - Tigelis, I.G.
AU - Theodorou, A.S.
JO - International Journal of Infrared and Millimeter Waves
PY - 2007
VL - 28
TODO - 4
SP - 291-298
PB - 
SN - 0195-9271, 1572-9559
TODO - 10.1007/s10762-007-9209-9
TODO - Broadband twists;  Rectangular waveguide twists;  Waveguide discontinuities, Computer simulation;  Electromagnetic wave polarization;  Frequency bands;  Mathematical models;  Microwave devices;  Rectangular waveguides, Phase shift
TODO - 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. © Springer Science+Business Media, LLC 2007.
ER -