Title :
Planar sensors for RFID wireless complex-dielectric-permittivity sensing of liquids
Author :
Lobato-Morales, Humberto ; Corona-Chavez, A. ; Olvera-Cervantes, J.L.
Author_Institution :
Inst. Nac. de Astrofis., Opt. y Electron., Puebla, Mexico
Abstract :
Two planar sensors for wireless RFID dielectric permittivity sensing of liquids are presented. The first sensor consists of a Substrate-Integrated-Waveguide (SIW) resonant cavity while the second one is composed by an SIW Epsilon-Near-Zero (ENZ) tunnel sensor. Both structures produce a notch resonance response at 4 GHz which is used for the characterization of the liquids using the Cavity-Perturbation-Technique. The proposed sensors present good sensitivity using a small amount of sample volume.
Keywords :
permittivity measurement; radiofrequency identification; sensors; substrate integrated waveguides; RFID wireless permittivity sensor; cavity perturbation technique; complex dielectric permittivity sensor; epsilon near zero tunnel sensor; frequency 4 GHz; liquid permittivity; notch resonance; planar sensor; resonant cavity; substrate integrated waveguide; Cavity resonators; Dielectrics; Permittivity; Radiofrequency identification; Sensor phenomena and characterization; Table lookup; Cavity Perturbation Technique; Epsilon-Near-Zero Tunnel; Radio Frequency Identification; Substrate-Integrated-Waveguide; dielectric permittivity measurements;
Conference_Titel :
Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6177-4
DOI :
10.1109/MWSYM.2013.6697735
