Verification of surface WGM in radio frequency band

The ideas of generating surface whispering gallery mode (SWGM) through coating a microresonator with a layer of metamaterials is proposed in our previous work. In this paper, we verify the SWGM with a square resonator based on two-dimensional LC network in radio frequency band. The equivalent node voltage distribution matrix of this resonator is derived. Results show that node voltage can be amplified when the square resonator is covered with a layer of double negative metamaterials. The performance of the metamaterial resonator as a dielectric sensor with excellent sensitivity has been demonstrated. This work may put a great step toward the realization of SWGM sensors using metamaterials.