一种双圆极化天线的结构设计与力学分析

Structure Design and Mechanical Analysis of a Dual-circular Polarization Antenna

圆极化天线在卫星通信、电子对抗等领域有其自身鲜明的特点和优势,而高增益双圆极化天线是未来星载通信天线的重点研究方向。文中介绍了一种新型双圆极化平面激励杯状天线的结构设计方案,该方案实现方式简单,加工装配周期短,有利于电讯方案的快速验证。为测试天线的力学性能,利用ANSYS有限元分析软件对天线进行了模态、过载、随机振动条件下的仿真分析。结果表明,相关性能完全符合指标要求。此方案对该类型天线的设计和分析提供了参考和依据。

The circular polarization antenna has many unique advantages in satellite communication , electronic warfare systems, etc.And the high-gain antenna with dual-circular polarization is an important part in the fu-ture space-borne communication antenna system .In this paper , the structure design of a novel dual-circular polarization cup antenna is introduced .The design method has advantages of easy realization and efficient pro-duction .Mechanical analysis including modal , overload and random vibration analysis is conducted by the fi-nite analysis software ANSYS to test the mechanical performances of the antenna .The result shows that the mechanical performances of the antenna meet the requirements of the design indexes .It can be used as refer-ence for the design and study of this kind of antenna .