A compact ultra-wideband crossed-dipole antenna for 2G/3G/4G/IMT/5G customer premise equipment applications

1 Introduction A compact ultra-wideband crossed-dipole antenna is proposed for 2G/3G/4G/IMT/5G customer premise equipment(CPE)applications.The arms of the crossed-dipole antenna are formed by step-shaped patches,and a wideband operation can be realized by properly selecting the order of the step-shaped patches;its bandwidth can be further enhanced by extending the end of crossed dipole downward.Each dipole is excited by a microstrip stub that is directly connected to a coaxial cable.Furthermore,a slotted rectangular parasitic patch is added beneath the crossed dipoles to further support a 5G sub-6-GHz band without additional space cost.