Title :
A coupling matrix-based readout technique for single-port multi-resonator passive sensor array
Author :
Chen, W.T. ; Mansour, Raafat R. ; Carroll, John
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
This paper presents a novel application of RF-filter parameter extraction techniques with coupling matrix model to obtain decoupled capacitive sensor readings from the S11 of a single-port, multi-resonator passive RF resonant sensor array. As an example application, two dual-resonator sensor arrays loaded with four selected functional polymers are implemented to allow ethanol and acetone identification. Through the parameter extraction techniques, the changes in capacitances of the sensor pair are obtained as chemical signatures to differentiate the presence of ethanol from acetone.
Keywords :
capacitive sensors; chemical sensors; matrix algebra; organic compounds; polymers; radiofrequency filters; readout electronics; resonators; sensor fusion; RF-filter parameter extraction technique; acetone identification; coupling matrix-based readout technique; decoupled capacitive sensor reading; dual-resonator sensor array; ethanol identification; functional polymer; single-port multiresonator passive RF resonant sensor array; Capacitance; Chemicals; Conferences; Ethanol; Sensor arrays; Chemical sensors; gas detectors; microwave sensors; sensor arrays; sensor phenomena and characterization;
Conference_Titel :
Microwave Symposium (IMS), 2014 IEEE MTT-S International
Conference_Location :
Tampa, FL
DOI :
10.1109/MWSYM.2014.6848534
