Planar Antenna with U-Shaped Slot on Radiating Patch and Conductor-Backed Plane for UWB Applications

摘要

Planar antenna with U-shaped Slot on Radiating Patch and Conductor-Backed Plane for UWB Applications is presented in this paper. The basic planar antenna is modifying by cutting a U-shaped slot on the radiating patch. A U-shaped conductor-backed plane is add on the ground plane and acts as parasite resonator. By inserting an optimized triangular slits and multi-slotted ground plane, the antenna produced a high fractional bandwidth of 120% with operating bandwidth from 3.1 GHz to 12.33 GHz. The antenna has very small size as 12x18 mm2. Yet, it still can produce very wide operating bandwidth. The modified planar antenna fulfills the requirement for ultra-wideband (UWB) applications which need operating bandwidth from 3.1 GHz to 10.6 GHz. The significant parameters of the proposed antenna are defined clearly in this paper. Simulated results are observes and analyzed. Overall, the proposed antenna produces acceptable gain for UWB application between 2.6 dBi to 5.7 dBi. Stable and near omni-directional radiation pattern are also produced by the antenna.