Abstracto

Compact Design of H-Shaped Fractal Microstrip Patch Antenna Using Different DGS for Wireless Applications

Kapil Thakur, Sumit Kaushik

Microstrip antennas find applications in aircraft, satellite and missile applications where important characteristics are size, weight and complexity. Design and simulation has been carried out using IE3D simulation software. Minkowski fractal geometry has been applied on patch of antenna to form self similar H-shaped patch antenna. By applying DGS in horizontal direction and vertical direction, characteristics of antenna are observed. When DGS has been changed in horizontal direction and Fr-4 has been used as substrate then antenna resonated at 2.7 GHz, 4.8 GHz and 6.2 GHz with return loss of -17.66 dB, -13.6 dB and -23.66 dB. This antenna has gain of 6.05 dBi, 5.6 dBi and 3.66 dBi. Results are also obtained for H-shaped fractal patch antenna by applying plus shaped DGS and slot shaped DGS, hence antenna can be used for WLAN applications. When microstrip feed line has been used, proposed antenna can be useful for GPS application