Performance Enhancement of an E-shaped Microstrip Patch Antenna Loaded with Metamaterial

In this paper, an efficient structure of metamaterial is proposed to enhance the performance of an E-shaped micro strip antenna. E-shaped antenna has been considered for the research because of its advantages over other shapes. It is less vulnerable to interference when several other antenna elements are present in the vicinity. The frequency band selected for the design is 6–7 GHz, C-band. The E-shaped antenna proposed is intended to be applied for many satellite communications transmissions. The metamaterial structure is made up of two nested split octagonal rings located on a 10 × 10 FR4_epoxy with 1.6 mm thickness and dielectric constant of 4.4. The patch antenna substrate consists of a 5 × 4 array of such metamaterials. By using this metamaterial in the microstrip antenna, enhancement of performance parameters in terms of return loss is seen.