Complementary Split-ring Resonator as a High Sensitivity Sensor
, Ali M. Albishi ; Omar M. Ramahi ; Muhammed S. Boybay . 2012
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.
This study explores the viability of using the avoided mode crossing phenomenon in the microwave regime to design microwave differential sensors. While the design concept can be applied to any…
his paper presents a novel microstrip patch antenna design using slots and parasitic strips to operate at the n77 (3.3–4.2 GHz)/n78 (3.3–3.8 GHz) band of sub-6 GHz and n96 (5.9–7.1 GHz) band of…