Highly Sensitive Planar Microwaves Sensor

In this paper, a sensor design concept for enhancing the electromagnetic energy stored in the sensing volume is presented. The design concept is based on using a three-dimensional capacitor to enhance the stored electric energy in the sensing volume that is exposed to the material under test. For validation, a resonator based on a split-ring resonator (SRR) was utilized to design a sensor. The concept was tested using numerical simulation to characterize dielectric materials.