A Novel Ultra - Wide Band Hybrid Antenna Sensor for WBAN Applications

A novel, hybrid and miniaturized sensor element design for WBAN is proposed in this manuscript. In this letter, hybridisation of circular ring shape micro strip patch is done with rectangular dielectric resonator in order to achieve ultra-wide bandwidth of 9.1 GHz. Introduction of defected ground structure (DGS) excites multiple higher order modes. Amalgamation of these multiple mode resonances, generate an impedance bandwidth of 95%. The proposed design yields a resonating bandwidth of 9.1 GHz (5 -14.1 GHz) with an average radiation efficiency of 90%. Peak gain of 5.1dBi is obtained in entire operating bandwidth. Antenna is designed and simulated using FDTD method and is proved to be an ardent candidate for On body WBAN technologies due to its high gain, compact size with wide impedance bandwidth. The comparison of steady and simulated results shows a good agreement with antenna.