CPW-coupled-fed elliptical monopole antenna for UWB applications

In this paper, a coplanar-waveguide (CPW)-coupled-fed elliptical monopole antenna (CCFEMA) is presented for UWB applications. The antenna has a large bandwidth covering the frequency band from 2.8 GHz to 16.5 GHz with return loss larger than 10 dB and radiation pattern similar to that of a dipole antenna. With an appropriate modification of the radiation patches, a band-notched antenna based on the CCFEMA can also be designed to have a good band-notched performance for the band from 5.0 GHz to 6.0 GHz to avoid interfering with WLAN. The return loss, radiation pattern, peak gain, efficiency and band-notched characteristic of the antenna are studied using computer simulation. For verification, a prototyped antenna is also fabricated and then measured using the antenna measurement system, Satimo Starlab. The results show that the proposed antenna is a good candidate for UWB applications.