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An Angular Displacement Sensor Based on Microwave Transversal Signal Interference Principle
Chi Hou Chio1; Roberto Gómez-García2; Li Yang2; Kam Weng Tam1; Wai-Wa Choi1; Sut Kam Ho1
2020-05-28
Source PublicationIEEE Sensors Journal
ISSN1530-437X
Volume20Issue:19Pages:11237-11246
Abstract

A novel rotational angle microwave sensor with a high dynamic range and sensitivity for detecting angular displacement is presented. It exploits the spectral separation between two notch frequencies or transmission zeros that are generated in its transfer function, and whose value varies as a function of the rotation angle to be measured. The sensor is based on a bi-path transversal-signal-interference (TSI) circuit configuration that is implemented on microstrip technology, where a rotor comprised of an open-circuit-ended stub is loaded onto a stator of this transversal circuit with equal-length electrical paths. The mechanical rotation of the rotor changes the contact point of the open-circuit-ended line to the stator, thus effectively modifying one of the overall paths of the stator and, hence, the inter-transmission-zero separation. Design guidelines for the synthesis of the proposed rotation sensor with a specified dynamic range and sensitivity are provided. Furthermore, a proof-of-concept microstrip-substrate-based prototype with an angular rotation range of 180° is developed at 920 MHz and tested to validate this approach experimentally.

KeywordAngular Displacement Sensor Microstrip Technology Microwave Measurement Technique Microwave Sensor Rotational Angle Sensor Transmission Zero Transversal Signal Interference (Tsi)
DOI10.1109/JSEN.2020.2998181
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Instruments & Instrumentation ; Physics
WOS SubjectEngineering, Electrical & Electronic ; Instruments & Instrumentation ; Physics, Applied
WOS IDWOS:000582804900022
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141
Scopus ID2-s2.0-85091044776
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
Affiliation1.Department of Electrical and Computer Engineering,University of Macau,Macao
2.Department of Signal Theory and Communications,University of Alcalá,Alcalá de Henares,28871,Spain
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Chi Hou Chio,Roberto Gómez-García,Li Yang,et al. An Angular Displacement Sensor Based on Microwave Transversal Signal Interference Principle[J]. IEEE Sensors Journal,2020,20(19):11237-11246.
APA Chi Hou Chio,Roberto Gómez-García,Li Yang,Kam Weng Tam,Wai-Wa Choi,&Sut Kam Ho.(2020).An Angular Displacement Sensor Based on Microwave Transversal Signal Interference Principle.IEEE Sensors Journal,20(19),11237-11246.
MLA Chi Hou Chio,et al."An Angular Displacement Sensor Based on Microwave Transversal Signal Interference Principle".IEEE Sensors Journal 20.19(2020):11237-11246.
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