Design of an array with modified ultra-wideband Quasi-Yagi antennas

An array with modified ultra-wideband (UWB) Quasi-Yagi antennas is designed. The Quasi-Yagi antenna is adopted in this design which has obtain the characteristics of UWB (3.1-4.1 GHz) and high-gain (10 dB) in practical project effectively, through modifying the radiation part, designing a broadband feeding network, and grouping an array. The final size of this antenna is 218×110 mm
²
, and the thickness is about 1 mm.