A Two-Port Dipole Antenna with Enhanced Isolation for Radiation Pattern Diversity Application Using Commonly Differentially Hybrid-Fed Method

A two-port dipole antenna with enhanced isolation and radiation pattern diversity ability is designed. First, the first-and second-order modes are analyzed and manipulated to support radiation pattern diversity applications. Then the commonly differentially hybrid-fed (CDHF) architecture is investigated, showing the ability to realize high isolation and radiation pattern diversity. Finally, a two-port dipole antenna is designed utilizing the CDHF method. The isolation exceeds more than 35 dB in the total operating bands. Additionally, broadside and conical radiation patterns can be achieved when Port 1 and Port 2 are exited respectively.