A notched-band UWB planar monopole antenna using the tapped-line coupled resonator

In this paper, we propose a band-notched monopole antenna for ultra-wideband applications. The notched band, 5 GHz WLAN band, is created by using a proper-positioned tapped-line coupled resonator on a fork-shaped radiator center. The proposed antenna also features flat gain frequency response, small varied group delay and 10 to 18 dB gain suppression in the notched band. Details of the antenna are discussed along with measured and simulated results.