Angular Displacement Sensor Based on Corrugated Substrate Integrated Waveguide (CSIW)

Abstract

An angular displacement sensor is designed using a corrugated substrate integrated waveguide (CSIW) cavity resonator. In the proposed cavity, instead of copper vias, one of the electric walls is made by a number of open quarter guided wavelength stubs and to make an angular displacement sensor, a rotatable copper sheet is located on the stubs. When the copper sheet rotates, the length of the stubs varies causing the shift of the resonant frequency. This relation between the variation of the rotation of the sheet and the resonant frequency shift is represented by an analytical model. According to the result of the measurement and that obtained by analytical model there is a good agreement between them, in addition the results indicate that the sensor provides an angle range of 21° and a sensitivity of 11.3 MHz/degree.

KEYWORDS:

• Angular sensor
• Cavity resonator
• Corrugated substrate integrated waveguide
• Microwave sensor

Additional information

Notes on contributors

A. Soltan

Abbas Soltan received the BSc degree in communications engineering from Shahed University, Tehran, Iran, in 2014 and the MSc degree in communications engineering from Ferdowsi University of Mashhad, Mashhad, Iran, in 2016. He is currently working on PhD degree in the field of microwave sensors at K N Toosi University of Technology, Tehran, Iran. His research interests include electromagnetics, antenna theory and design, and passive microwave sensors.

R.A. Sadeghzadeh

R A Sadeghzadeh is a professor of communications engineering at the Faculty of Electrical Engineering of the K N Toosi University of Technology in Tehran, Iran. He received his BSc in 1984 in telecommunication engineering from the K N Toosi, University of Technology and MSc in digital communications engineering from the University of Bradford and UMIST (University of Manchester Institute of Science and Technology), UK as a joint programme in 1987. He received his PhD in electromagnetics and antenna from the University of Bradford, UK in 1990. Professor Sadeghzadeh worked as a post-doctoral research assistant in the field of propagation, electromagnetics, antenna, bio-medical and wireless communications from 1990 till 1997. From 1984 to 1985 he was with Telecommunication Company of Iran (TCI) working on networking. Since 1997 He is with the K N Toosi University of Technology working with Telecommunications Department at the Faculty of Electrical Engineering. He has published over 200 referable papers in international journals and conferences. His current interests are numerical techniques in electromagnetics, antenna, propagation, radio networks, wireless communications, nano-antennas and radar systems. Email: [email protected]

S. Mohammad-Ali-Nezhad

Sajad Mohammad-Ali-Nezhad received the BSc degree in electronic engineering from Shahid Chamran University, Ahwaz, Iran, in 2008 and the MSc and PhD degrees in communication engineering from Shahed University, Tehran, Iran, in 2010 and 2015, respectively. Currently, he is assistant professor and the Head of the Department of Engineering, University of Qom, Qom, Iran. His research interests include leaky wave antennas, printed circuit antennas, array antennas, phased array antennas, MIMO antennas, RFID tag antennas, frequency selective surface, electromagnetic compatibility, microwave filters, and electromagnetic theory. Email: [email protected]