Miniaturized Base-station Antenna Element with Sinuously Bent Arms

Miniaturized ± 45° dual-polarized antenna element for cellular base-station application is proposed. The radiators of the antenna are sinuously folded, reducing the aperture size to $0.27 \lambda_{0}*0.27\lambda_{0}$, where $\lambda_{0}$ is the wavelength at the center frequency. Despite the compact size, simulated results show that stable radiation pattern, high port and crosspolarization isolation are archived.