Abstract:

To improve the electromagnetic performance of the intelligent reflector antenna, an optimum shape control model is developed based on the structuralelectromagnetic coupling theory, which takes the gain and first sidelode levels as a comprehensive objective function. The control model adopts the material strength and the active travel and the passive travel in length of actuators as constraint conditions, and active voltages as controlled variables, and the electromagnetic performance is expressed as a function of controlled voltages through the structuralelectromagnetic coupling model. The proposed model and traditional optimum shape control model both are applied to a 7.3 m reflector antenna, in which the selfweight and solar radiation are considered with 77 temperature sensors to measure temperature. Result shows that the proposed control model is more efficient in improving the electromagnetic performance.