An ultra-wideband horizontally polarized omnidirectional connected vivaldi array antenna

摘要

An omnidirectional horizontally polarized antenna with an ultra-wideband impedance and radiation bandwidth is proposed in this paper. The connected Vivaldi antenna array is firstly applied to realize a UWB horizontally polarized antenna with good omnidirectional radiation properties. The designed antenna exhibits a relative impedance bandwidth of 163.17% for |S11|<;-10dB (1.45-14.3GHz). Meanwhile, good omnidirectional radiation patterns with a gain variation of less than 1.5dB has been obtained within the frequency band of 1.45-12GHz (156.88%).