A Review On Different Band Notching Techniques Used In Design Of Slot Antenna For UWB Applications

As per Federal Communication Commission (FCC) standard 3.1~10.6 GHz is unlicensed frequency band for UWB communication. Notching will be helpful to avoid interference between UWB and some narrow band that are WiMAX (3.3?3.7GHz), C-band satellite downlink (3.7GHz?4.2GHz), WLAN (5.15?5.825 GHz), DSRC (5.50?5.925 GHz) etc. Different notching techniques are discussed in this paper. Some techniques include adding parasitic stubs of different shapes, rectangular slits, and slots. In this paper comparative study will be done for different notching techniques.