Design and Development of Defected Ground Structure Fractal Antenna based on Osgood Curve for C-band Modern Wireless Communications

Multifunctional behavioral antennas are one of the significant features of the modern wireless communication. This is due to the fact of the miniaturized size of the devices demand the compact and low-profile antenna covering limited space and provides multi frequency functions over a wide range of spectrum. In view of these perquisites, this paper presents the two design approaches utilizing Osgood Curve Fractal structure as the antenna element with different feeding techniques. The proposed antennas resonate at multiple frequencies covering S- and C-band with excellent impedance matching. Both the design has been optimized in terms of scaling factor and position of microstrip feed line with peak gain of 4.5 dBi. The design 1 has significant bandwidth for required applications however; design 2 possesses low bandwidth with small frequency ratio. Both the proposed designs are fabricated and results are quite promising. The proposed design can be utilized for various sub-6 GHz 5G automotive applications as it can easily integrated in the various parts of the modern passenger car.