Abstract
This paper proposes a coupling approach to investigate the effects of structural deformation on the performance of structurally integrated antenna. In this method, the deformed displacement of radiating elements is determined by using the modal superposition principle of dynamic mechanic equation. Subsequently, the deformed displacement is coupled to the radiated field equation of the antenna array. Finally, an electromechanical coupling model is built by combining the equations from two different disciplines. Some experimental devices are designed by utilizing a 2.5GHz structurally integrated antenna, and the results confirm the effectiveness of the coupling model. The validated model can been applied to investigate the influences of environmental loads on the mechanical and electrical performance.
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