Development and optimization of microwave guide polarizers using equivalent network method

Abstract

In this article, we have developed a new mathematical model of a microwave square guide polarization converter with diaphragms. The applied model was created using the microwave theory of equivalent networks. The novelty of the developed theoretical model consists in its possibility to take into account the thickness of the diaphragms. This feature is achieved by using more accurate but complicated T- and Π-shaped equivalent networks. Theoretical analysis and optimization of a guide polarizer were performed using the scattering and transmission matrices of the diaphragms in a square guide. The parametric optimization of a guide polarizer was performed by means of the developed equivalent networks and using finite elements method in the frequency domain. The optimal sizes and electromagnetic characteristics of the polarizer, which were obtained by both methods, are in good agreement. The main advantage of the suggested mathematical model consists in the calculation time reduction. Developed compact waveguide polarizer can be used in modern satellite and radar antenna systems with circular polarization of applied electromagnetic waves.

KEYWORDS:

• Electromagnetic simulation
• microwave engineering
• optimization
• guide polarizer
• equivalent network
• FEM
• diaphragm
• polarization
• scattering matrix
• satellite systems
• radar

Disclosure statement

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

Additional information

Notes on contributors

Stepan Piltyay

Stepan Piltyay received a MSc Diploma from the National Technical University of Ukraine ‘Kyiv Polytechnic Institute’ in 2011. In 2018 he received a PhD degree in antennas and microwave appliances. His current position is Associate Professor at the Department of Radio Engineering. His main research interests are design and optimization of microwave polarizers, orthomode transducers, waveguide devices and antennas. He is author and co-author of more than 100 publications in various journals and conferences.

Andrew Bulashenko

Andrew Bulashenko received a MSc Diploma from the National Technical University of Ukraine ‘Kyiv Polytechnic Institute’ in 2006. He became a full university Senior Lecturer in 2010. He is currently teaching a course in electrical circuit theory and is actively involved in the developments of microwave polarization processing devices. He has more than 80 publications in various journals and conferences.

Vadym Shuliak

Vadym Shuliak entered the Faculty of Radio Engineering of National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’ in 2016. He studies at the Department of Radio Engineering. His area of interests is passive microwave devices.