Pattern-reconfigurable antenna using four-elements dipole array for 5G
beam-switching applications
Abstract
This article presents a circular array using four-elements dipole with
beam-switching capabilities for 5G communications. The beam can switch
in four directions by controlling the switch states implemented in the
arms of each dipole. The different antenna modes lead to different
radiation behaviors. The first is a directional behavior containing 4
radiation modes depending on the dipole fed into the network. The second
type of radiation has a double beam pattern according to the two fed
dipoles. According to the simulated results, a corresponding overall
bandwidth of 932.3 MHz (S11 < - 10 dB) can be obtained with a
peak gain of 3.15 dBi and an overall efficiency of 80%. The proposed
antenna is fabricated and measured to verify the simulation results.
This low-cost, efficient, and easy-to-design antenna array can be very
useful for 5G beam switching applications.