Research On Large - Scale Broadband Antenna Array

In recent years, the development of wireless communication technology, phased array radar and ultra wideband communication systems is still very quickly. It is significant to research on array antenna。Based on this background, This thesis mainly studies the array antenna and feed network。The full text is summarized as follows:1.The missile needs to exchange the information with the satellite or the radar,when it is flying.But it’s attitude changes all the time when it flies in the sky.A phased array antenna is needed to ensure that the information can be smoothly transmited. The array must be cylindrical conformalto reduce the resistance.A multilayer microstrip antenna is developed in this thesis,working on Ku-band.The size of the array is 6×10.2. With the development of communication technology, the capacity of communication becomes larger and larger. It is feasible if the bandwith is ultra wide.The ultra wideband antenna array is a hot research in recent years.This thesis studies the Vivaldi antenna array,working on 9-23GHz.The relative bandwidth reaches 85 percents.The antenna is developed in periodic boundary condition. The ultra wideband feed network is designed finally. The array in this section finally satisfies the design index.With the development of economy,the array antenna which has wide band becomes more and more important.Although many experts has made a contribution, more efforts must be made to this fields.