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 (3.1–4.1GHz) and high-gain (10dB) 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 218×110mm2, and the thickness is about 1mm.