Research And Analysis Of 5G Electric Scanning Antenna

Since the birth of modern communication technology,every innovation and breakthrough made in technology have made people's life more convenient and diversified.Today,5G began to be gradually applied to our life.With the large-scale increase of mobile communication terminal equipment,the resource shortage such as base station location and channel capacity becomes a problem.In such a situation,the application of the antenna with electrical scanning ability to the base station is a scheme that can effectively improve the communication capacity of the base station,integrate the site resources and provide better communication services for users.Therefore,it is of great practical significance to research and analyze the electro-scanning antenna for 5G communication.According to the relevant regulations,the 5G communication bands currently used by China's mobile communication operators are mainly 3.4GHz-3.6GHz and 4.8GHz-4.9GHz.In this paper,the antenna unit and beamforming network in the antenna system are studied for the 5G communication frequency band mentioned above.The main research contents of this paper are as follows:Firstly,the magnetic-electric dipole antenna is studied.Broadband is an important characteristic of magneto-electric dipole antenna.In this paper,the broadband characteristics of the antenna are studied.An ultra-wideband dual-polarized antenna unit working in 2.35GHz-7.57 GHz is designed,and its relative bandwidth reaches 105%.After that,aiming at the Sub 6GHz frequency band which is applied in 5G communication in China at the present stage,a miniaturized dual-polarization antenna unit with a relative bandwidth of 53.2% is designed by means of meander technology.Compared with the literature with similar work,the design size of this paper is significantly reduced.Finally,a 4-element uniform linear array with the above-mentioned antenna as the array element is analyzed and studied.Secondly,two typical multi-beamforming networks,namely Butler matrix and Rotman lens,are studied.At first,according to the characteristics of the traditional Butler matrix network band width,and from the perspective of low cost,through the design of the matrix network components such as microstrip couplers,cross junction and phase shifters,4×4 and 3×4Butler matrices are finally obtained,and their impedance bandwidth reaches 41%.Then,thanks to the advantages of Rotman lens in bandwidth and the flexibility of beam design,a 5-beam Rotman lens is designed.