Tunable polarization rotator on a pair of grooved flanges

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.

KEYWORDS:

• Circular waveguide
• polarization rotator
• dihedral symmetry
• artificial optical activity
• metamaterials

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

A. A. Kirilenko

Anatoliy A. Kirilenko (M'96-SM'99) received the Researcher, Ph.D., and D.Sc. degrees in radiophysics from Kharkiv National University (KhNU), Kharkiv, Ukraine, in 1965, 1970, and 1980, respectively. Since 1965 he has been with the National Academy of Sciences of Ukraine (IRE NASU), Kharkiv, Ukraine, where he has founded and was the longterm head of the Department of Mathematical Modeling. Now he is the chief researcher in the Laboratory of Computational Electromagnetics. His research interests lie in analytical and numerical methods in electromagnetics, resonance phenomena and eigenoscillations in waveguides and gratings, in microwave computer-aided design and in electromagnetics of metamaterials. He is the author or coauthor of four books and more than 400 scientific papers in the field of numerical electromagnetics and resonance scattering. Prof. Kirilenko is the member of Editorial Boards of several radioelectronic and physical Journals in Ukraine. He brought up over twenty PhDs and Docs. of Sci. Prof. Kirilenko was a recipient of the 1989 State Prize of Ukraine in Science and Technology. His current interest is dedicated to the unconventional phenomena in the structures with discrete spatial spectrum produced by eigenoscillations, by the fringing field interaction and in particular they cause the artificial optical activity phenomena.

S. O. Steshenko

Sergiy Steshenko received his M.S. degree in applied mathematics from Kharkiv National University (KhNU), Kharkiv, Ukraine, and the Ph.D. degree in radiophysics from the Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine (IRE NASU), Kharkiv, Ukraine, in 1996 and 2006, respectively. From 2001 to 2005, he was with the Department of Mathematics, Kharkiv National University, as a Junior Scientist. From 2007 to 2008 and in 2010, he was a Postdoctoral Fellow with the Department of Information Engineering, University of Siena, Siena, Italy. He is currently a Head of the Laboratory of Computational Electromagnetics, IRE NASU. His research interests include numerical methods for the analysis and design of waveguides and antennas, and eigenvalue problems.

V.N. Derkach

Vadim N. Derkach received his Researcher degree in physical optics and radiospectroscopy and Ph.D. degree in physics and mathematics from Kharkiv National University (KhNU), Kharkiv, Ukraine, in 1974 and 1984, respectively. In 1975 he joined the National Academy of Sciences of Ukraine (IRE NASU), Kharkiv, Ukraine, where, since 2004, he has been a Senior Researcher. His current research interests are open resonance structures, nondestructive testing by using millimeter waves, low-temperature spectroscopy, and metamaterial research.

Ye. M. Ostrizhnyi

Yevhenii Ostryzhnyi received his bachelor's degree from Kharkiv National University of Radio Electronics in 2008, in 2019 received M.S. degree. In 2012 he joined the National Academy of Sciences of Ukraine (IRE NASU), Kharkiv, Ukraine, where he works as a research engineer. His current research interests are spectroscopy, surface waves and metamaterial research.

L. P. Mospan

Lyudmila P. Mospan (IEEE SM'11) received her M.S. degree in radio engineering from the Kharkov State University, Kharkov, Ukraine, and her Ph.D. degree in radio engineering from the Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine (IRE NASU), Kharkov, Ukraine, in 2001. She is currently a Senior Researcher in the Computational Electromagnetics Lab. of IRE NASU and an Associate Professor at O.M. Beketov National University of Urban Economy in Kharkiv, Kharkiv, Ukraine. Her research is focused on microwave computer-aided design and resonance phenomena in waveguides and gratings.