CPW-UWB Flexible Composite Antenna using Jute Textile for WPAN Applications

Abstract

Ultra-wideband (UWB) antennas has seen to be one of the technologies that gaining fame in modern and future wireless communication systems, due to high demand for wideband communication, since it works at frequency ranges from 3.1GHz to 10.6GHz. UWB antenna can be suite with many wireless applications like WPAN (wireless Personal area network), portable devices which is it came with a lot of functions and operated at different frequency ranges. There is very less attention has been given to consider organics material like jute in designing an antenna, where it is more environmentally friendly, low cost of manufacturing, durability, sustainable and renewable. The antenna was mounted on the flexible raw material of Jute as a substrate that have relative permittivity of 2.36, tangent loss 0.005407 at 5GHz frequency and the thickness is 1. 68mm. Conductive material Shield it Super with conductivity of 1.18×105 and thickness of 0.17mm has been use as radiator in this design and the antenna was designed with ungrounded coplanar waveguide feeding technic. A simple CPW -UWB antenna was designed and simulated using CST (Computer Simulation Technology) software. Optimization to the antenna resulted, improvement at bandwidth, compared with the first design antenna. The proposed antenna achieved bandwidth of ~7.15GHz which is operating frequency is from 3.48Ghz to 10.63GHz. Moreover, the antenna has VSWR<2, Efficiency more than 75%, realized gain and directivity more than 2dBi and it also works in omnidirectional pattern, at entire frequency range.