Multi-field coupling analysis and experiments of ground reflector antennas under clear-day solar radiation

作者：Li Peng^*; Wang Wei; Zheng Fei; Zhou Sheng Huai; Yuan Biao

来源：Journal of Astronautics, 2010, 31(7): 1864-1869.

DOI：10.3873/j.issn.1000-1328.2010.07.026

• ANSYS software
• Clear-day solar radiation
• Electrical parameter
• Far-field patterns
• Ground reflectors
• Multi-field coupling
• Practical engineering
• Reflector antennas
• Structural deformation
• Structure deformation
• Temperature field
• Temperature field analysis
• Temperature models

Thermal-structural deformation caused by clear-day solar radiation will effect the electrical parameters of ground reflector antennas. For this problem, temperature field analysis model is proposed firstly. The temperature and the structure deformation of antenna could be obtained with ANSYS software. Secondly, a temperature experiment has been designed via a 7.3 m reflector antenna. Results of the experiment indicate that, the temperature model is valid. Thirdly, electrical parameters of antenna are calculated by far field patterns formula. With other two formulas of temperature field and structure, the multi-field coupling model of ground reflector antennas is proposed. The model proposed in this paper is applied to a 40 m reflect antenna and the result is meaningful for practical engineering.

• 出版日期2010
• 单位西安电子科技大学