Patent ID: 6437748
Filing Date: 2002-08-20
Classification: G01R

Abstract:
A tapered anechoic chamber, said tapered anechoic chamber comprising:a planar back wall, said planar back wall comprising a rectangular shape; a planar front wall comprising a rectangular shape, said planar front wall parallel to and separated a distance from said back wall, said planar front wall comprising smaller dimension than said planar back wall, the center points of said planar back wall and said planar front wall lying along a line orthogonal to the planes defined by said planar front and back walls; four side walls, each of said side walls connected to a full edge of said planar back wall, said side walls lying in planes orthogonal to the plane defined by said planar back wall, said four side walls connected so as to form a rectangular enclosure attached to said planar back wall; four tapered side walls, each of said tapered side walls contacting a full outer edge of one of said side walls and a full edge of said planar front wall, said tapered side walls connected so as to form an enclosed range between said planar front wall and said planar back wall; and electromagnetic energy absorbing material attached to the inside of said enclosed range, said electromagnetic energy-absorbing material comprising a plurality of tapered members extending into said enclosed range and on at least one of said side walls or tapered side walls, at least one portion of said electromagnetic energy absorbing material comprising a plurality of tapered members wherein adjacent said tapered members comprise different lengths from the tip to the base of each said tapered member.