| As the end-fire array has the advantages of small wind resistance, low installation height and light weight, and is especially suitable for application in high-speed mobile carrier, the new generation of AWACSwill choose it for airborne phased array radar for the best option.This article mainly aims at the end-fire phased array antenna technology and related studies for AWACS.The main contents and innovations of this paper are as follows:Firstly, the research background and significance of integration technology of the research is presented, and the development process of AWACS radar technology and relevant AWACS radar antenna are simply introduced. Besides, end-fire phased array antenna’s significance in the AWACS radar and itsstate-of-the-art are summarized.Then, the basic theory and some key parameters of antenna are introduced briefly. And the closely related with the AWACS aircraft end-fire array antenna of technical indicatorsare focused on.In addition, the article also introduces the existing common end-fire antenna unit form and their respective advantages and disadvantages.Thirdly,based on the research requirements, an end-fire phased array antenna which is suitable for airborne is designed, and it uses cone monopole as the unit antenna. A low-profile cone monopole antenna is designed, and its parameters are studied and analyzed. Based on the antenna unit, 1×16 end-fire array and 32×10 end-fire array is designed. The simulation results show that the end-fire arrays have good performance.Finally,monopole-yagi antenna is simulated and optimized, and chosen as the array unit. The reason of beam on the finite ground warped is analyzed.The yagi antenna is improved,which improve the beam deflection and benefit for the end-fire array. Based on the improved yagi antenna, a 20×9 array is deigned. To control the sidelobe level of the azimuth plane pattern, Taylor distribution is used. The simulation results show that the end-fire arrays have good performance. |
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