Design of a dual-notched ultra-wideband (UWB) planar antenna using L-shaped bandstop resonator

In this paper, a novel ultra-wideband (UWB) printed circuit board antenna with dual band-notched characteristics is presented. The antenna consists of a circular patch with two pairs of the L-resonator. To realize the notch characteristics in WLAN at 5.2 GHz (5.15-5.35 GHz) and 5.8 GHz (5.725-5.875 GHz) bands, the half wavelength of L-resonator is introduced in the radiating patch. The T-shape notch is etched in the ground plane to enhance the bandwidth which covers the resonant frequency range from 3.048-10.561 GHz. The effects of L-resonator on the band-notched characteristics are also investigated. The proposed antenna with band-notches shows good impedance matching for the simulated in the physical layout. Furthermore, the proposed antenna has a compact size of 29 × 40 mm
²
. This proposed design can provides an alternative solution for the UWB wireless system in the designing of a band-notched antenna with a very good notch band.