Title :
SnO2capacitive sensor integrated with microstrip patch antenna for passive wireless detection of ethylene gas
Author :
Balachandran, M.D. ; Shrestha, S. ; Agarwal, M. ; Lvov, Y. ; Varahramyan, K.
Author_Institution :
Louisiana Tech Univ., Ruston
Abstract :
A capacitive gas sensor using tin oxide (SnO2) nanoparticles has been integrated with a microstrip patch antenna for detecting ethylene gas emanated from climacteric fruits. The decrease in sensor capacitance owing to the presence of ethylene (0-100 ppm) changes the antenna resonant frequency and return loss (by 7 MHz and 9.5 dB) which can be monitored wirelessly.
Keywords :
capacitive sensors; gas sensors; microstrip antennas; nanoparticles; resonance; tin compounds; antenna resonant frequency; capacitive gas sensor; capacitive sensor; climacteric fruits; ethylene gas; microstrip patch antenna; passive wireless detection; sensor capacitance; tin oxide nanoparticles;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20083636
