Electromechanical coupled analysis and experimental validation of reflector antennas

In electromechanical coupled analysis of large reflect antennas, the mesh for structure analysis does not match with the mesh for electromagnetism analysis. For this problem, the geometrical optics method is used for electromechanical coupled modelling. A transformation matrix for different meshes has been deducted based on the structure mesh. Use this transformation matrix and improved Gaussian integral formula to complete numerical solution. A verification experiment has been designed for verifying the coupled method. Results of experiment show that the coupled model is accurate and efficient, could be used in electromechanical coupled analysis of reflector antennas. Finally the proposed model and method are applied to a 40 m reflector antenna, and the result is accord with practice engineering.