Research And Design Of Array Antenna In 5G Background

With the rapid development of information technology,communication network technology is also growing gradually.The 2G era,3G era and 4G era all conform to the trend of the times and bring different degrees of convenience to people's lives.The popularization of these technologies makes our world more and more colorful.In today's National Research on communication technology,scholars have found a more stable,faster and more in line with the current needs of the fifth generation mobile communication technology(5G).As the core component of wireless communication system,antenna plays a decisive role in the development of communication system.Based on 5G communication and millimeter-wave array antenna,the electromagnetic radiation characteristics and performance of array antenna under 5G background are studied in this paper.The main research innovations and achievements are as follows:1)A microstrip patch antenna model based on step impedance resonator is designed for 5G low frequency band.Firstly,the uniform impedance resonator is taken as an example to analyze the performance of the impedance resonator in the antenna and device design.Next,the characteristics of the step impedance resonator and the uniform impedance resonator are compared,and the step impedance is analyzed.The advantage of the resonator;the next step is to apply the step impedance resonator in the simulation design of the microstrip antenna,and establish the simulation model in the Hfss electromagnetic simulation software.Finally,the simulation result of the antenna and the traditional microstrip patch antenna And the simulation results of the microstrip patch antenna based on the uniform impedance resonator are compared.It is concluded that the microstrip patch antenna based on the step impedance resonator designed in this paper not only realizes the multi-frequency and wide frequency of the antenna.At the same time,the suppression of higher harmonics is also of great significance.2)Research on decoupling technology based on defective ground structure;A wideband antenna based on a step impedance resonator is used as a unit to form a 1*2 antenna array,and a defective structure is etched on a ground plate between two array elements of the array antenna.The three defect structures were compared and analyzed by Hfss simulation,and the effect of the defect structure on suppressing mutual coupling between antenna elements was verified.A new type of six-pointed star-shaped defect structure designed in the antenna can not only achieve 10 dB coupling suppression,but also obtain higher gain and better directivity,and retain the antenna unit.Broadband characteristics.3)Research on decoupling techniques based on frequency selective surfaces.The study also uses a broadband antenna based on a step-impedance resonator as a unit to form a 1*2 antenna array.The frequency selective surface structure is loaded at a position directly above the array antenna,and the cell structure of the designed frequency selective surface is in Floqut.In port excitation mode,it exhibits transmission characteristics in the operating frequency band.The antenna array loaded with the designed frequency selective surface structure,in the working frequency band,can ensure that the bandwidth performance of the antenna array is not affected,the transmission characteristic curve can be reduced to about-34 dB,and a good decoupling is obtained.effect.