Title :
Complementary split-ring resonator as a high sensitivity sensor
Author :
Albishi, Ali M. ; Ramahi, Omar M. ; Boybay, Muhammed S.
Author_Institution :
Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
A new sensor based on complementary split-ring resonators (CSRR) is proposed. The sensor can detect sub-millimeter micro-surface cracks effectively. The crack perturbs the electromagnetic field around in the close vicinity of the CSRR gap, thereby causing a shift in the resonance frequency of the CSRR resonator. The sensor is etched-out in the ground plane of a microstrip-line using printed circuit board technology, thus making it significantly less expensive than crack detection sensors based on waveguides. The sensor presented here is designed to operate around 7 GHz. The sensor exhibits a frequency shift of more than 240 MHz for a 100 μm crack.
Keywords :
crack detection; printed circuits; sensors; waveguides; CSRR gap; CSRR resonator; complementary split-ring resonator; high sensitivity sensor; microstrip-line; printed circuit board technology; resonance frequency; submillimeter microsurface cracks; Metals; Microstrip; Microwave theory and techniques; Resonant frequency; Sensitivity; Surface cracks; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6348501
