DESIGNOFANINVERTEDL-C-SHAPE ELECTROMAGNETICBANDGAPANTENNA USINGSNGMATERIALSFORC-BAND APPLICATIO

Abstract

An Inverted L-C-shape EBG antenna is presented for C-band application in communication technology in this thesis. An Epsilon Negative (ENG) Material is used for an effective antenna design.FR-4 material is used as a substrate of 11×11 mm2 dimensions in this design having a dielectric constant is 4.3 and a thickness is 1.6 mm in unit cell design. But the dimension of the antenna is double to unit cell dimensions suchas 22×22 mm2wherethe mainpatchantenna,EBGstructure, or unit cell design consists of copper metal with 0.035 mm thickness and 10×10 mm2 dimension. At the resonant frequency of 8.01 GHz, the return loss magnitude is-42.29 dB for the proposed EBGantenna and coversthe C-band and lower ling of X-band quality to communicate. A 90.0 MHz bandwidth was obtained from the inverted L-C-shape EBG antenna. Instead, the conventional microstrip patch antenna provides 60 MHz bandwidth at the resonant frequency of 7.11 GHz. The gain and directivity of the proposed EBG antenna are 6.42 dBi and 7.27 dBi. Similarly, the required SNG material provides the only negative value of electric polarizability is-1.69 enclosing the C-Band at the resonant frequency of 7.11 GHz. The efficiency rate is 68.52% which refers to good EBG antenna performance. The resulting performance with EBG technology provides better performance such as return loss, far-field directivity, and bandwidth than a basic microstrip patch antenna (without EBG). Specifically, the utilizing properties of electromagnetic waves of ENG materials provides strengthening gain and overall performance in EBG Antenna technology and that’s the goal of our thesis study.