Design Synthesis of Fractal Antenna on Mushroom type AMC in the Vicinity of 2.4 Ghz

Artificial magnetic conductors (AMCs), also known as high-impedance surfaces, have received considerable attention in recent years. Artificial Magnetic Conductor surface is a kind of electromagnetic band gap (EBG) or artificially designed structure having a magnetic conductor surface for some particular frequency band. These engineered surfaces consist of a periodic arrangement of unit cells having specific metallization patterns. Two most important properties which make it suitable for low profile antenna applications are: Inphase reflection and Surface wave suppression. In the proposed work, Fractal antenna on Mushroom type AMC surface with vias and without vias is designed and simulated in IE3D version 14.62 electromagnetic software. After comparison of simulated results like Return Loss, VSWR and Directivity obtained using IE3D software of both types of AMC surfaces, it is found that Fractal antenna on AMC surface with vias is better as compared to AMC surface without vias. Hence Fractal antenna on AMC surface with vias is fabricated using a FR4 substrate. The designed Fractal antenna over AMC surface operates effectively at 2.4 GHz frequency with a bandwidth of 450 MHz which ranges from 2.3 GHz to 2.75 GHz. After fabrication of the Fractal antenna on AMC surface with vias the simulated results are tested using VNA (Vector Network Analyzer). After testing it is verified that simulated results and measured results obtained using VNA are in good match with each other.