Dielectric measurement sensor based on SIW loaded split-ring
Based on perturbation theory,a miniaturized permittivity measurement sensor with elliptical split-ring loaded on substrate integrated waveguide(SIW)structure is proposed.The elliptical split-ring is etched on the surface of the sensor,which increases current path and at the same time reduces the working frequency,so as to realize the miniaturization of the device.The center area of the sensor has a through hole.When the objects to be detected with different permittivity are put into sensor,the S parameters of the sensor will change correspondingly.When the real part of the permittivity changes from 1 to 10 after the sensor is analyzed by simulation software,the relative frequency offset is 32.4％.The measurement results show that measurement error of the permittivity of the sensor is less than 3％,which has good measurement effect.
NETL
NSTL
万方数据
维普
