Transmission Characteristics of Surface Waves in Defective Absorbing Layers

Magnetic loss materials have been extensively used as surface waves attenuation materials. Transmission characteristics of surface waves in defective absorbing layers were rarely reported. Herein, the transmission attenuation of surface waves on defective flexible magnetic loss-absorbing materials had been studied extensively. By comparison, the transmission performance of the surface wave on materials with defects was obviously deteriorated. The results demonstrated that the slot length was less than half the wavelength of the incident plane wave, the defect did not matter on the monostatic radar cross section. Once the length was larger than half wavelength, the scattering of the surface wave was obvious. Non-specular scattering occurs at the defects, causing an increase in the radar cross section. In order to further reduce the radar cross section caused by non-specular scattering, some effective repair schemes would be needed.