MODELING AND ANALYSIS OF A NOVEL MICROWAVE SENSOR BASED ON WAVEGUIDE FILLING WITH A METAMATERIAL PARTICLE

A novel microwave sensor based on waveguide filled with a metamaterial particle, which is composed of meander line and split-ring-resonator (SRR), is presented and modeled using a full wave electromagnetic commercial simulator CST. Simulating results show that evanescent mode are enhanced and transmitted through the structured particle within the frequency band that exhibits negative permittivity and permeability. Evanescent mode is sensitive to permittivity of dielectric material in the detecting zone. Comparing with conventional microwave resonant sensor, the microwave sensor using evanescent mode allows for much higher detection sensitivity.