Analysis on the properties of a coupled planar dipole UWB antenna

A new structure of coupled planar dipole ultra-wide-band antenna is presented. This low-profile design is mainly developed via a multi-band antenna concept plus general coupling equivalent circuit concepts of narrowband antenna analysis. The practical design work and analysis results are performed with Ansoft Design. The reliable full wave simulation analysis shows that this novel structure can easily realize a good linear variation for the sweep gain as well as frequency notched properties within a controllable bandwidth from 3 to 8 GHz.