Flexible and Small-size Graphene Ultrawideband Antenna with Wi-MAX/WLAN Dual-band Suppression Characteristics

In our work, a flexible, small-size ultra-wideband (UWB) antenna based on a high conductive graphene assembly film (GAF) with dual-band suppression characteristics in the WiMAX/WLAN band is proposed. The proposed antenna is only 23x22x1.024 mm
³
in size and by 50 R coplanar waveguide (CPW) feed. Band suppression characteristics are acquired by adding two complementary split ring resonators (CSRR). It operates in the 2.8-9.65 GHz band, with the suppressed bands of WiMAX (3.3-3.8 GHz) and WLAN (5.15-5.85 GHz). The UWB antenna is made of flexible material, which can maintain excellent resonance characteristics under different bending conditions. Also, making the same type of copper antenna for comparison, the GAF antenna has broadband advantage at mid and high freuuencies,