In this paper, a compact triple band-notched Ultra Wideband (UWB) antenna with sharp band-elimination features and controlled notched bandwidths is proposed and discussed. The design is made up of a rectangular-shaped   patch UWB planar monopole antenna with double collections of band-notched configurations. The band-notched configurations are involved to produce the desired lower and upper stop bands with good frequency selectivity and suitable stop bandwidths. The first notch is realized by using a C-shaped slot etched in the radiating patch in order to eliminate the interference at the WiMAX (3.4 - 3.8 GHz) applications. The second and the third notches are realized together by using a pair of U-shaped resonators that are located beside the feed line in both sides to eliminate the interference with the lower WLAN (5.15–5.35 GHz) and the higher WLAN (5.725–5.825GHz) bands.  Additionally, the bandwidths of the lower and upper stop bands can be control separately by changing the parameters of the band-notched configurations. Furthermore, the suggested triple notched bands UWB antenna is optimized, fabricated, and measured for verification purposes. The measured results are close to the simulated ones.

In this paper, an ultra-wideband (UWB) band pass filter (BPF) with dual rejection Bands based on two parallel T shaped resonator is proposed. The UWB band pass is realized by one pole high pass filter followed by a low pass filter. The lower cut off frequency is determined using a lumped coupling capacitor whereas, the higher cut off frequency is achieved by the low pass filter. The filter is suitable for wireless communication applications within the unlicensed UWB range set by the Federal Communications Commission (FCC). Such UWB band pass filter with notched bands is required in practical systems in order to avoid the interference between the UWB radio system and existing radio systems. The notched band can be easily adjusted to some specific frequency band(s) by tuning the parameters of the T shaped resonators. The proposed filter exhibits relative excellent ultra-wide bandwidth and notched bands performance compared with references. The measured results agree with the simulated ones.