Novel structure and EM-driven design of small UWB monopole antenna

A novel structure of a small UWB monopole antenna is presented. In our approach, a compact size is achieved by means of a meander line for current path enlargement as well as the two parameterized slits that introduce additional degrees of freedom helping to ensure good impedance matching. The antenna design is carried out using surrogate-based optimization involving variable-fidelity EM simulations. This allows us to simultaneously adjust all geometry parameters of the structure and reduce the antenna footprint while maintaining low reflection in the UWB frequency range.