Study Of Circularly Polarized Missile-borne Conformal Array Antenna

In modern military warfare,rockets,satellites,aircraft and missiles are essential weapons and equipment.Among them,missiles have become an important weapon that can change the situation of war.At present,the missile is given the function not only to hit the target,but also to obtain higher requirements such as control information,flight status and target tracking.The information acquired by the missile needs to be transmitted with the satellite or ground station.Therefore,the performance and layout of the missile antenna is particularly important.For a high-speed moving object such as a missile,the antenna needs to conform to the surface of the carrier,and the advantage is that it does not require an increase in the dynamic resistance of the formation of air.Due to the existence of the conformal antenna structure,the radiation characteristics and impedance characteristics of the antenna are affected.In this paper,based on the navigation missile-loaded conformal antenna,relevant research is carried out,and its research work is mainly divided into the following parts:First,the development of a telemetry conformal antenna array on a specific cylinder.According to the engineering requirements of the missile-borne telemetry conformal antenna,a microstrip antenna with a conformal structure on the surface of the cylindrical carrier is designed.The design requirements are discussed and analyzed by the requirements of the indicators,and the electrical properties of the unit structure are analyzed by software modeling and simulation.The planar array is first formed,conformed to the surface according to the structure of the projectile,and the relevant parameters are optimized to determine the power of the final conformal antenna array.performance.Thereafter,the impedance and radiation characteristics of the missile-borne conformal antenna are processed and measured,and each performance index satisfies the actual engineering index.Second,a specific cylinder conformal antenna array is studied.For the overall design of the antenna and give the design specifications and related technical analysis.The feeding mode and circular polarization design of the microstrip antenna are studied,and the resonant frequency and radiation characteristics of the rectangular microstrip antenna are simulated and analyzed.Through the above research,a new cylindrical microstrip conformal antenna array was designed.According to the simulation results,the standing wave characteristics,polarization mode and pattern shape of the conformal antenna array can meet the engineering requirements.Finally,the simulation and design of a cylindrical broadband circularly polarized conformal array antenna.In order to meet the needs of multi-band navigation and positioning,based on the research of the above-mentioned conformal antenna array,a broadband circularly polarized antenna was designed and developed.According to the simulation results of the 3D model simulation,the test prototype of the antenna is processed and measured in kind,and the test results are basically consistent with the simulation results,which verifies the feasibility of the structure design.