Left-handed meta-surface loaded with ring resonator modelling for satellite application

摘要

A new geometry of compact meta-surface, loaded with the ring resonator for satellite application (Ku-band), is presented in this paper. The diamond-shaped meta-surface is designed by the metallic ring resonator with metallic ground plane separated by a dielectric substrate layer, while epoxy resin fibre is utilized as a dielectric substrate layer. The proposed meta-surface structure is successfully simulated, fabricated, and measured. Effects of the design specifications on the surface current and field distribution are also investigated elaborately. Theoretical and simulated results show that the diamond-shape structure resonance is at 15.84 GHz, whereas the measured results are slightly shifted around at 15.87 GHz. The designed meta-surface structure also exhibits the left-handed characteristics at 15.88 GHz, where the estimations of permittivity is -4 + 0.28j, permeability is -19.2 - 134.6j, and negative index is -5.51 - 3.86j. Further, the lumped element equivalent circuit model of the proposed meta-surface unit cell is explained. Moreover, the 10 × 10 mm~2 meta-surface single-unit-cell prototype is compact in size and the impact on the performance by modifying the meta-surface structure is investigated. Therefore, the meta-surface integrated antenna shows resonance frequency bands from 14.0 to 14.50 GHz, which is used as INSAT-4A communication satellite uplink frequency.