Design and Mode Matching Analysis of Stepped Substrate Integrated Waveguide and Filters

Abstract

This paper presents a stepped substrate integrated waveguide. The generalized scattering properties of the cascaded $H$-plane discontinuity in a substrate integrated waveguide operating in various frequency bands are obtained using mode-matching techniques (MMT) from the respective field equations at four different step discontinuities. The scattering parameters $(S)$ obtained from the individual regions are cascaded to obtain the $S$-parameters of the overall structure. The processor computation time and memory used by MMT are compared to those of commercial simulators like high-frequency structure simulator (HFSS) and computer simulation technology microwave studio (CST-MWS), and the S-parameters obtained using MMT are compared with HFSS and CST-MWS simulated and measured S-parameters. Due to periodicity in the designed structure, a filter-like property has been observed. The $S$-parameters generated from mathematical formulations, simulations, and measurements show very good agreement.

KEY WORDS:

• Filter
• Mode matching techniques
• SIW
• Stepped

Disclosure statement

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

Additional information

Notes on contributors

Sudarshan Kumar

Sudarshan Kumar received the BE in electronics and communication engineering from Meerut University and MTech in digital communication from UPTU, Lucknow. He is pursuing PhD from Delhi Technological University, New Delhi. He is currently working as an assistant professor in Maharaja Agrasen Institute Of Technology, New Delhi. He published over 20 research articles in international journals and conferences. His areas of interest are electromagnetic field theory, antennas and microwave circuit.

Asok De

Asok De Asok De obtained the BE and ME degrees with specialization, in electronic and communication engineering from Jadavpur university, Kolkata 1978 and 1980, respectively. He was awarded PhD from Indian Institute of Technology, Kharagpur in the year 1986. He is emeritus professor in Department of Electronics and Communication Engineering since 2017. His areas of interest include antennas, transmission lines, microwave circuits, and computational electromagnetics. He published over 130 research articles in international journals and more than 130 research articles in international/national conference proceedings. He has supervised 14 PhD thesis and four are going on. He is a senior Member IEEE (USA), Fellow IEI (India), Fellow IETE, and life member CSI (India). Email: [email protected]