Reconfigurable Dual-Polarized Beam-Steering Broadband Antenna Using a Crossed-Strips Geometry

In this letter, a reconfigurable dual-polarized broadband antenna with beam-steering capabilities using a parasitic layer is proposed for 5G new radio (NR) frequency range 1 (FR-1) applications. The antenna is a dual-port aperture-stacked patch structure with symmetrical orthogonal (horizontal and vertical) currents. The beam-steering is achieved by a pair of reconfigurable cross-shaped parasitic strips, which bestow the antenna three main beam directions θ = { ~ -25
^°
,0
^°
, ~ 25
^°
}, Ψ = {0
^°
} with pointing and gain ($ 7$ dB) stability across a 30% impedance bandwidth (S
₁₁
, S
₂₂
<; -10 dB) from 3.2 - 4.3 GHz for both ports/polarizations. A prototype of the antenna is manufactured and measured demonstrating results in accordance with simulation expectations.