Mobile Broadband Communication Dipole Antenna

With the rapid growing of science and technology,mobile communication is also constantly developing,and people are increasingly demanding base station antennas for mobile communications.Over the years,the research on base station antennas has always been a hot issue,especially for the study of wideband and multi-polarization of antenna units,because there are multiple frequency bands in the communication standard in mobile communication systems,such as LTE base station antennas.It is a way to solve this situation.In this case,one antenna can replace multiple antennas in the original multiple frequency bands,which reduces the number of antennas and saves a certain cost,so that the number of base stations can be appropriately reduced.Therefore,the wideband of the antenna and dual polarization have become the research hotspots.For the base station antenna,the dual-polarized antenna mainly uses the positive and negative 45-degree polarization.In this thesis,the mobile base station antenna I studied has designed two dual-polarized wide-band dipole antennas and the bandwidth is 1.7-2.7GHz.The mobile broadband communication vibrator antenna is mainly studied.Two different vibrator antennas are designed,one is dual-polarized.Printed dipole antenna,the other is die-cast vibrator antenna.The work done and innovation in this article are as follows:(1).Firstly,the theoretical analysis and calculation are carried out on the basis of the traditional printed dipole,and the preliminary modeling is carried out.Then,by changing the structure of the dipole,the multi-branched barron,the parasitic unit and other technical means to make the antenna reach the required bandwidth to complete the design of a single antenna unit.(2).Secondly,the single antenna unit is improved to form a dual-polarized antenna.In order to avoid mutual influence,the balun and the dipole at the intersection are processed,and the simulation and test results are finally achieved,which meets the basic requirements of the base station antenna.(3).Design a die-cast dipole antenna,an integrated antenna with an antenna integrated with the balun,a quarter of the balun structure and the shape design of the dipole,and finally realize the corresponding bandwidth,The simulation of result is good.