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An Angular-Displacement Microwave Sensor Using an Unequal-Length-Bi-Path Transversal Filtering Section
Chi-Hou Chio1; Roberto Gómez-García2; Li Yang2; Kam-Weng Tam1; Wai-Wa Choi1; Sut-Kam Ho1
2019-09-25
Source PublicationIEEE Sensors Journal
ISSN1530-437X
Volume20Issue:2Pages:715-722
Abstract

A class of angular-displacement microwave sensor based on a microwave signal-interference transversal filtering section (TFS) with unequal-electrical-length paths is reported for the first time. It consists of a bi-path TFS composed of two in-parallel transmission-line segments with distinct lengths, which is modified by adding a rotational open-circuit-ended stub as the rotor to a curved section as the stator of one of its line segments. In this manner, the spectral positions of the transmission zeros, which are produced in its filtering transfer function through destructive signal-energy interactions, are modified with the rotation of this additional stub. This allows single/multi-band angular-displacement microwave-sensing capabilities in terms of transmission-zero inter-spacing variation for passbands/stopbands and stopband-peak-level modification to be attained by means of the mechanical rotation of the rotor. The theoretical operational principles of this type of bi-path-TFS-based angular-displacement microwave sensor and design curves for specific values of its electrical parameters are provided. Moreover, for experimental validation purposes, a proof-of-concept prototype of the devised TFS-based microwave-sensor approach operating at 961 MHz with 180° dynamic range is prototyped in microstrip technology and measured. A comparative analysis of the developed angular-displacement microwave sensor with the state-of-the-art is also presented.

KeywordAngular-displacement Sensor Microstrip Technology Microwave Measurement Technique Microwave Sensor Microwave Sensor Multi-band Sensing Rotational-angle Sensor Transmission Zero Transversal Filtering Section (Tfs)
DOI10.1109/JSEN.2019.2943640
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:000522345700018
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141
Scopus ID2-s2.0-85077781391
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Cited Times [WOS]:8   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
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 Microwave Sensor Using an Unequal-Length-Bi-Path Transversal Filtering Section[J]. IEEE Sensors Journal,2019,20(2):715-722.
APA Chi-Hou Chio,Roberto Gómez-García,Li Yang,Kam-Weng Tam,Wai-Wa Choi,&Sut-Kam Ho.(2019).An Angular-Displacement Microwave Sensor Using an Unequal-Length-Bi-Path Transversal Filtering Section.IEEE Sensors Journal,20(2),715-722.
MLA Chi-Hou Chio,et al."An Angular-Displacement Microwave Sensor Using an Unequal-Length-Bi-Path Transversal Filtering Section".IEEE Sensors Journal 20.2(2019):715-722.
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