A broadband dual polarized antenna with coupling resonators for base station applications
A broadband dual polarized antenna is proposed, which consists of two orthogonal dipoles coupled four L shaped resonators. The proposed antenna have two resonant modes in the working band, the lower mode is come from the 1/2 dipole itself, while the upper one is attributed to coupling between two orthogonal dipoles. Moreover, the upper mode can be further controlled by coupling four L shaped resonators to realize more broadband performance for LTE base station applications. The antenna achieves a impedance bandwidth of 45.5% for SWR<1.5 at both ports, a isolation more than 26dB between ports, and a stable Half Power Bandwidth (HPBW) of 65.5 deg+ 2.9 deg over 1.7 2.7GHz band. A good agreement is obtained between the simulation and the measurement results.
2018 International Workshop on Antenna Technology (iWAT)