Performance Enhancement of Dual Polarized Array Antenna for Modern Wireless Applications

This paper presents a performance-enhanced of dual-polarized array antenna designed for modern wireless communications covering 2G, 3G, and LTE frequency bands. The proposed antenna employs orthogonally arranged Y-shaped dipole elements combined with structural miniaturization and multi-resonant techniques to achieve wide impedance bandwidth, high port isolation, and stable radiation characteristics. Bandwidth enhancement is realized through bent dipole arms and shorting stubs, which collectively introduce multiple resonant modes across the operating band. A reflector with sidewalls is incorporated to suppress back radiation and improve forward gain. In addition, a director is used to further enhance the overall gain of the antenna. Simulation results demonstrate an impedance bandwidth of approximately 1.68–2.69 GHz with isolation better than 25dB, array gain around 18.6-20.2dBi, and port to port tracking less than 1dB. This proposed antenna offers a compact, broadband, and high-performance solution for modern wireless communication systems.