一种反射面波束扫描角度快速估算方法  

One Method for Quick Estimation Beam Scanning Angle of Reflector

作　　者：王浩[1] 牛雪杰[1] 崔兆云[1] 周兰兰[1] 南冰[1] WANG Hao;NIU Xuejie;CUI Zhaoyun;ZHOU Lanlan;NAN Bing(China Academy of Space Technology（Xi＇an）,Xi＇an 710100,China)

机构地区：[1]中国空间技术研究院西安分院,西安710100

出　　处：《空间电子技术》2018年第1期79-82,104,共5页Space Electronic Technology

摘　　要：针对现有反射面天线设计中,因馈源横向偏焦而引起波束扫描角度变化的一般现象及扫描角度估算过程,首先,采用归一化及逆推思想,并结合理论分析提出了一种快速估算焦径比约为0.8的正馈反射面馈源横向偏焦波束扫描角度的方法;其次,在此基础上,利用归一化的思想将这一方法推广到任意焦径比下正馈反射面天线波束扫描角度估算;最后,利用GRASP10.0仿真对比分析验证了该估算方法的正确性及精度。该方法为馈源横向偏焦的正馈反射面天线波束指向角度快速估算提供了一种新的途径。During the design of reflector antenna,the beam scanning angle must be estimated because of the lateral offset feeding. In this paper,firstly,by using normalization and reverse thought,a method for quick estimation beam scanning angle of reflector with an f/D of 0.8 is proposed. Secondly,the proposed method is popularized to estimate the beam scanning angle of a reflector antenna with arbitrary f/D.Finally,the validity and accuracy of the method are verified by using the simulator software GRASP 10.0.The proposed method provides a new approach to quick estimate the beam scanning angle of a reflector antenna with a lateral offset feeding.

关 键 词：反射面天线 波束扫描 角度估算 

分 类 号：V474[航空宇航科学与技术—飞行器设计]