Embroidered textile frequency-splitting sensor based on stepped-impedance resonators
Vélez Rasero, Paris (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Martín, Ferran (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Fernández-García, Raúl (Universitat Politècnica de Catalunya)
Gil, Ignacio (Universitat Politècnica de Catalunya)

Date:	2022
Abstract:	This paper presents an embroidered textile frequency-splitting microwave sensor based on a pair of identical stepped-impedance resonators (SIRs) loading a microstrip transmission line. The sensor is implemented by means of conductive threads. The sensing region of the proposed structure is the capacitive square patch of one of the SIRs. If such region is kept unaltered, the structure is symmetric, and the frequency response (transmission coefficient) exhibits a single transmission zero. However, if symmetry is broken (e. g. , through liquid absorption in the sensing region), the frequency response of the proposed sensor exhibits two transmission zeros (frequency splitting). The difference (in frequency and magnitude) between such zeros (or notches) is intimately related to the dielectric properties of the absorbed liquids to be sensed //μl/μl.
Grants:	Agencia Estatal de Investigación PID2019-103904RB-I00 Agencia Estatal de Investigación TEC2016-79465-R Agencia Estatal de Investigación PDC2021-121085-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1159
Note:	Altres ajuts: ICREA award
Rights:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Absorption ; Conductive yarn ; Dielectric constant ; Drops ; Embroidered sensor ; Frequency splitting ; Microstrip ; Microwave sensors
Published in:	IEEE sensors journal, Vol. 22, Issue 9 (May 2022) , p. 8596-8603, ISSN 1558-1748

DOI: 10.1109/JSEN.2022.3163165

Postprint 10 p, 1.4 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Engineering > CIMITEC-UAB
Articles > Research articles
Articles > Published articles