Radiation Performance Improvement in Wearable UWB Antenna through Slot Insertion Technique

Huge numbers of papers have been published on Ultra Wideband (UWB) antennas which present an antenna having satisfactory input reflection coefficient and reasonable radiation pattern. Some additional critical characteristics are also required to be considered in the design of UWB antenna like transient gain, group delay, ringing, signal fidelity and efficiency. In this paper, a novel design of UWB antenna in a thin substrate has been presented. The proposed antenna has been designed on RT Duroid substrate with di-electric constant (?r) of 2.2 and height of 0.127 mm. Reflection co-efficient, gain and radiation pattern at different frequencies have been presented for the proposed antenna. It has been optimized to be operated in UWB frequency range between 3.1 GHz to 10.6 GHz. The Gain of 2.5 has been observed for the antenna, which is almost constant. Slot insertion method has been used in the proposed antenna design to optimize radiation pattern.