Radar Absorbing Structure with Periodic Pattern Surface for Wind Blade

The wind turbine blade, owing to its huge size and height with the rotational motion, is emerging to be a big threat to the radar systems. To reduce the radar interference, this work presents radar absorbing structures with a periodic pattern surface applicable on the surface of the blade considering the configuration of the cross sectional characteristics of the wind turbine blades. The optimal design was performed to get the design parameters along with the thickness of the substrate of the radar absorbing structure, which is the composite structure composing the wind turbine blade structure.