A Study of the Anechoic Performance of Rice Husk-Based, Geometrically Tapered, Hollow Absorbers
Figure 1
Illustration of wave-absorber interactions: (a) possible interactions of incident EMI signal with the wall of the anechoic chamber that is lined with a periodic array of pyramids; (b) sketch of a unit cell of the array of solid pyramids, showing a gradual increase in volume and loss factor along the axis of the wave propagation.
