Stripline Resonator with the Coaxial Radiation Probe for Permittivity Detection

In this paper, a stripline resonator with the coaxial radiation probe is introduced. Considering the need for the insertion detection, partial energy of the resonator is coupled and radiated on the detected material by using the coaxial probe. On the other side of the stripline resonator, the coupling line is designed and connected to the coaxial connectors. The resonant modes are excited and presented in the open-ended stripline resonator. The introduced resonator is designed and measured at the frequency range from 0.3 GHz ~ 4 GHz. By the permittivity detection of the several materials, it verified that the proposed stripline resonator can be used for the detection application.