Research And Design Of Broadband Dual Polarization Base Station Array Antenna

The development of mobile communication technology cannot leave the improvement of the base station antenna,as an important part of mobile communication base station antenna,its miniaturization,intelligence has a profound influence on mobile communication system.Smaller base station antennas mean lower costs and smaller installation difficulty,which lays the foundation for the densification of base station antennas.The intelligent antenna can adjust the signal amplitude and phase weight of the antenna array according to the demand of communication dynamically,thus obtaining the maximum gain in the corresponding direction.As more and more closer to 5G technology,the communication system of the demand for new base station antenna is becoming more and more big,the base station antenna of multiband,double polarization,miniaturization and so on the new structure is of great significance.First of all,this paper introduces the present situation of base station antenna and related research,explains the theory of base station antenna,with current operators on the basic requirement of base station antenna as the background,clear the basic structure of the article broadband dual polarized antenna.Then,a printed PCB base station antenna was designed,and after the array was formed,considering the isolation of the antenna,it was staggered and arranged against the substructure.After a series of simulation and test,the antenna operating at 1880 MHZ to 2635 MHZ frequency band,the maximum radiation direction of 8 dB gain,VSWR is less than 1.5,shows that the antenna has good directionality and standing wave ratio,proved the effectiveness of the proposed design method.Finally,designed a broadband dual polarization base station antenna unit,1.71 GHz to 1.71 GHz frequency coverage,using HFSS software the optimization of power dividers and vibrator,respectively,after processing and testing,measured antenna gain is 8 dB,VSWR is less than 1.4,ultimately meet the requirements of the model are obtained.Through the study of this paper,the working principle and design method of the broadband dual-polarized base station antenna are explored and studied,and the theoretical basis and reference results are provided for the corresponding base station antenna.