A Split Center Resonator FSS-Based Gain Enhancement of CPW Feed UWB Antenna for High Gain UWB Communication
Bisma Arif, Muhammad Bilal, Asim Quddus, Rashid Saleem, Khmaies Ouahada, Ateeq Ur Rehman, Muhammad Farhan Shafique, Habib Hamam
Abstract
In this manuscript, gain improvement is observed for an ultra-wideband (UWB) antenna. The proposed arrangement is optimally designed for high gain wideband communications. This arrangement comprises a low profile and easily circuit integrated antenna covering spectrum ranges from 3.1 GHz to 10.6 GHz for low power UWB communications. Extended impedance improvement is also achieved by employing a co-planar waveguide (CPW) feeding mechanism incorporating a castle shaped profile and wider radiation element. Moreover, a periodic structure based single layered frequency selective surface (FSS) for gain improvement is also suggested. This split center resonator (SCR) FSS is designed and employed owing to a smaller footprint and stable performance. The performance of this antenna-FSS arrangement is analyzed by varying the inter-element spacing of SCR, distance between SCR layer and the proposed CPW fed antenna. The simulations and measurements validate at least 5 dBi of gain improvement while offering wideband impedance matching and stable radiation performance. This improved performance and low-profile design makes the proposed arrangement suitable for modern high gain UWB communication services.