a luneberg type passive reflector for circularly polarized waves consists of a woven cloth made partially of conductive wires located within the dielectric sphere the surface of which is covered with a set of parallel wires perpendicular with the conductive wires in said cloth . the conductive wires of the cloth are less than five hundredths of wavelength in diameter and their spacing is between 1 / 4 and 1 / 20 of a wavelength . the wires interwoven with said metal wires to form the cloth are preferably made of flax .