Complex geometry apertures for resonant diaphragms in rectangular waveguides

ABSTRACT

In the paper, we investigate thin metal transverse resonant diaphragms with a complex aperture in rectangular waveguides and develop some new aperture profiles with advanced properties. The presented resonant diaphragms are produced by the metallization of the thin dielectric substrate and allow to construct band-pass and band-stop filters with high Q-factor and transmission zeros. An original approach to develop the ultra-compact and robust waveguide filters is described. As an example, we demonstrate the band-pass filter on WR-90 rectangular waveguides with the length of 8 mm and the pass-band of 10%.

KEYWORDS:

• Resonant diaphragm
• complex aperture
• waveguide
• filter
• dielectric substrate
• multilayered structure

ORCID

Viacheslav Zemlyakov http://orcid.org/0000-0002-3932-6759

Sergey Krutiev http://orcid.org/0000-0002-9389-8344

Additional information

Funding

This research is supported by the Council on grants of the President of the Russian Federation [grant number MD-118.2017.9].

Notes on contributors

Viacheslav Zemlyakov

Prof. Viacheslav Zemlyakov received his B.Sc. from Rostov State University (Russia) in 2000, M.Sc. from Karlsruhe University of Applied Sciences (Germany) in 2003, PhD from Rostov State University (Russia) in 2005 and D.Sc. from Southern Federal University (Russia) in 2015. He is currently a Professor with the Faculty of Physics of Southern Federal University, Russia. His research interests include electrodynamics, computer simulation, microwave filters and diplexers.

Sergey Krutiev

Mr. Sergey Krutiev received the M.Sc. degree from Southern Federal University (Russia) in 2014. He is currently working toward the Ph.D degree in the Faculty of Physics of Southern Federal University, Russia. His research interests include computer simulation, microwave waveguides and filters.

Mikhail Tyaglov

Dr Mikhail Tyaglov received B.Sc., M.S., and Ph.D. degrees from Rostov State University, Rostov-on-Don, Russia, in 1999 and 2001, respectively, and Ph.D. degree from Berlin Technical University, Berlin, Germany, in 2009, in classical analysis. Currently, he is a Special Researcher with the School of Mathematical Sciences of Shanghai Jiao Tong University. His research interests include classical and complex analysis, orthogonal polynomials, stability theory and filter design.