Abstract
Summary
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 mm2 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.
Meta‐surfaces are planar version of artificial metamaterial, and the proposed diamond‐shaped meta‐surface is designed by using ring resonator with parasitic metal strips in the inner side of the structure on FR‐4 dielectric material. From the lumped circuit model, the total inductance and capacitance are figured out in the paper. The meta‐surface shows left‐handed characteristics at 15.88 GHz, and after integrated with the antenna, resonance frequency band from 14.0 to 14.50 GHz that is used as INSAT‐4A communication satellite uplink frequency.