A Fabry–Perot Conical Beam Antenna With Multi-Polarization Reconfigurable Capability

Wideband Multi-linear Polarization Reconfigurable Antenna for Wireless Communication System

“…Another feasible approach is to introduce RF switches on the antenna, thus changing the polarization state [9]. It is worth nothing that multi-linear polarization reconfigurable antennas have been proposed in recent years, but most of these designs only contain two LP states [10][11][12][13][14][15][16][17][18][19]. In [10][11][12], antennas for 5G mobile communication have been proposed, which only contain two polarization directions.…”

“…At the same time, although they cover some of the frequency bands often used in 5G, the operating frequency bands are still very narrow. In [13][14][15][16][17][18][19], most of the antennas have three or four polarization modes, yet the line polarization states are only one or two. For example, in [13], the antenna is designed with four polarization states, yet the line polarization contains only horizontal and vertical polarizations, and the relative operating bandwidth (BW) for each polarization state is around 10% and even containing just one linearly polarized state in [14].…”

“…In [13][14][15][16][17][18][19], most of the antennas have three or four polarization modes, yet the line polarization states are only one or two. For example, in [13], the antenna is designed with four polarization states, yet the line polarization contains only horizontal and vertical polarizations, and the relative operating bandwidth (BW) for each polarization state is around 10% and even containing just one linearly polarized state in [14]. Furthermore, reconfigurable antennas with four LP states have been achieved in [20][21][22].…”