CAJ | 학술논문

大型单脉冲相控天线馈电网络的接收波束存在“和差矛盾”问题，传统的解决方案需要相当复杂的馈电网络和硬件成本。因此提出一种馈电网络设计方法，在获得接收和波束、方位差波束以及俯仰差波束低副瓣电平的同时，降低大型单脉冲相控阵天线馈电网络的复杂性。用该方法设计的3000单元二维相扫平面阵列天线馈电网络，仿真结果为：接收和波束副瓣电平＜－28 dB，俯仰差波束副瓣电平＜－22 dB，方位差波束副瓣电平＜－22 dB，仿真结果验证了该设计方法的有效性。
대형단맥충상공천선궤전망락적접수파속존재“화차모순”문제，전통적해결방안수요상당복잡적궤전망락화경건성본。인차제출일충궤전망락설계방법，재획득접수화파속、방위차파속이급부앙차파속저부판전평적동시，강저대형단맥충상공진천선궤전망락적복잡성。용해방법설계적3000단원이유상소평면진렬천선궤전망락，방진결과위：접수화파속부판전평＜－28 dB，부앙차파속부판전평＜－22 dB，방위차파속부판전평＜－22 dB，방진결과험증료해설계방법적유효성。
The conflict between sum and difference patterns is a serious problem in large?scale monopulse phased?array antenna system.The traditional solution of this problem needs complicated feed network and high cost of hardware.In this paper,a novel design method is presented to achieve good sum and difference patterns,which significantly reduces the complexity of the large?scale monopulse phased?array antenna feed network. A 3 000?element phased array antenna feed network is designed with this method. The simulation results are given as below:sidelobe level of sum pattern< -28 dB,sidelobe level of elevation?difference pattern< -22 dB,sidelobe lev?el of azimuth?difference pattern < -28 dB.These results verify the feasibility of the proposed method.