Patent ID: 9459299
Filing Date: 2016-10-04
CPC Classification: G01R,Y10T

Claim Text:
1. A method of making an anechoic chamber absorber comprising placing a periodic arrangement of disconnected, electromagnetically lossy elements on a lattice described by two non-coincident lattice directions, where the electromagnetically lossy elements are free-standing tubular structures having a first section extending from the lattice at a proximal end and a second section extending from a distal end of the first section to a distal end of that electromagnetically lossy element, where a cross-sectional shape of the tubular structure is constant along an axial length of the first section and is tapered along an axial length of the second section, where the second section is tapered along a plane that extends from one side of the tubular structure at the distal end of the first section to an opposite side of the tubular structure at the distal end of that electromagnetically lossy element, where no structures are disposed between adjacent first sections and between adjacent second sections of adjacent electromagnetically lossy elements extending from the lattice in the periodic arrangement.