Tunable polarization rotator on a pair of grooved flanges

A. A. Kirilenko, S. O. Steshenko, V.N. Derkach, Ye. M. Ostrizhnyi and L. P. Mospan

Journal of Electromagnetic Waves and Applications, 2020, vol. 34, issue 17, 2304-2316

Abstract: The polarization plane rotators located outside the transmission line volume are presented. Their work is based on the excitation of special (‘dihedral') eigen-oscillations in a waveguide object formed by two corrugated flanges with rotational symmetry. Such a topology provides 3D chirality of the composite object at an azimuthal shift of the flanges and rotation of the polarization plane by an arbitrary angle in the band of a few percent with minimal return loss. In circular and coaxial waveguides, a mechanical or electronic rearrangement of the PP by mutual rotation of the flanges or by the placement of controlled elements (media) into the object cavity is possible.

Date: 2020
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DOI: 10.1080/09205071.2020.1812442

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