A Full-Duplex Crossed-Dipole Antenna Designed with High Isolation

This letter presents a full-duplex crossed-dipole antenna designed with high isolation. The horizontal and vertical polarization are used for Tx and Rx separately, which is achieved by the crossed-dipole antenna. High Isolation is acquired by the use of band-pass filter which replaces the traditional coaxial feed line to maximize the efficient utilization of space. Referencing the simulation results, the proposed antenna demonstrates interport isolation values of 38.1dB over the operation band of 3.5-3.7GHz and 4.3-4.5GHz, alone with realized gain of 6.3 dBi and X-pol level less than 17dB. The performances of the proposed antenna are verified by HFSS simulation software.