A compact UWB CPW-fed antenna with inverted L-shaped slot for WLAN band notched characteristics

The purpose of this draft is to introduce a compact CPW-fed antenna with WLAN band notched characteristics. For band notched characteristics, an inverted L-shaped structure is used on the surface of radiator. The proposed design has overall size of 25 × 25 × 1.6 mm
³
and covers the entire UWB spectrum from 3.02 GHz to 11.34 GHz except the notch band from 4.9 GHz to 6.2 GHz. High concentration of surface current is shown on the inner side of antenna surface and inverted L-shaped stub, when the design is simulated at 5.5 GHz to show the band notch affect. The simulated results in terms of return loss, surface current distribution and VSWR exhibit good antenna performance over the complete spectrum. The validity of the proposed design is also shown by comparing the simulated results with the measured results.