一种外场天线测试转台设计

Design of Rotation Table for Antenna Testing in Far-Field

摘要:

为了满足天线在野外的测试需要,提出了一种外场天线测试转台的结构设计；该转台采用蜗轮蜗杆传动方式,可实现天线的俯仰和方位运动；文中对转台的组成进行了描述,并针对俯仰部件和方位部件的结构设计分别进行了详细说明,同时分析了转台的受力情况,对驱动力矩和惯量匹配进行了校核计算,从理论上分析了传动精度和测角精度；实际测试表明,该转台结构设计完全达到技术指标要求,能够满足天线外场测试的需要。

Abstract:

In order to meet antenna outdoors testing requirement, the paper described a structure design of Far-Field antenna testing rotation table. This rotation table used turbine/worm drive method, and realized the pitch/yaw movement of the antenna. The paper introduced the composing of the rotation table and gave detailed descriptions for the structure design of pitch rotation table and yaw rotation table respectively. In this paper, it had a stress analysis of the rotation table, calculated driving torque and inertia matching, analyzed transmission accuracy and angle accuracy theoretically. The actual testing indicated that the design of the rotation table can meet the requirements of the specification, and also can meet antenna outdoors testing requirement.