Dual band-notched antenna design using composite right/left handed metamaterial

A small metamaterial notch-antenna with band reject at 3.5 and 4.4 GHz is proposed by introducing reactance to balanced composite left-right unit cell, thus making it non-resonant at the desired frequency without any change in overall size. Simulations were carried on HFSS and antenna with notch band implemented on RT\Duroid substrate. The type I and type II CRLH metamaterial notch-antenna illustrate that the antenna notches at 3.5 and 4.4 GHz, with VSWR > 2. Such filters suitable for UWB application where there is interference.