A printed quasi-self-complementary antenna for UWB applications

The printed quasi-self-complementary antenna fed by a 50 Ω coaxial cable is proposed and investigated in this paper. It is demonstrated numerically and experimentally that the proposed printed quasi-self-complementary antenna can achieve an ultra wide impedance bandwidth, from 1.3 GHz to more than 12 GHz. The antenna also exhibits a compact and small dimension, only 0.22 Ω at 1.3 GHz. An evolution of the proposed antenna is depicted to demonstrate the mechanism of the built-in CPW-like matching section. The results show this antenna is a good candidate for the UWB applications.