Title :
Wireless passive sensing application using a cavity loaded evanescent mode half mode substrate integrated waveguide resonator
Author :
Senior, D.E. ; Cheng, X. ; Jao, P. ; Kim, C. ; Kim, J.K. ; Yoon, YK
Author_Institution :
Dept. of Electr. Eng., Univ. of Florida, Gainesville, FL, USA
Abstract :
In this work, an evanescent mode half mode substrate integrated waveguide (HMSIW) resonator is designed for a wireless passive sensing application at 5 GHz. The wireless pressure sensor has been implemented by placing a small Polydimethylsiloxane (PDMS) cavity, covered with a metal coated membrane, on top of the original resonator or by using a cavity ground plane. When the metal coated membrane is deformed or deflected by an external pressure, it perturbs the electric field of a complementary split ring resonator (CSRR) patterned on top of the HMSIW, producing a shift in the resonance frequency. Because it operates in a microwave frequency spectrum, it offers a high pressure-frequency sensitivity. Resonance frequency as a function of an applied pressure has been presented. Also, a broadband antenna has been integrated to perform wireless interrogation of the sensor.
Keywords :
broadband antennas; cavity resonators; membranes; microwave detectors; microwave resonators; polymers; pressure sensors; substrate integrated waveguides; wireless sensor networks; CSRR; PDMS cavity; broadband antenna; cavity ground plane; cavity loaded evanescent mode HMSIW resonator; cavity loaded evanescent mode half mode substrate integrated waveguide resonator; complementary split ring resonator; frequency 5 GHz; high pressure-frequency sensitivity; metal coated membrane; microwave frequency spectrum; polydimethylsiloxane cavity; resonance frequency; wireless passive sensing application; wireless pressure sensor; wireless sensor interrogation; Broadband antennas; Cavity resonators; Electromagnetic waveguides; Frequency measurement; Resonant frequency; Wireless communication; Wireless sensor networks; Complementary Split Ring Resonator; Electromagnetic transduction; Half Mode Substrate Integrated Waveguide; Passive Sensors;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0157-3
DOI :
10.1109/TRANSDUCERS.2011.5969205