Electromagnetic Anechoic Chambers used from Microwaves to Millimeter-Waves and Ultra Broadband Wave Absorbers

Abstract

The electromagnetic anechoic chambers have been widely used for many purposes with the advance of communications from microwaves to millimeter-waves. In this paper, the electromagnetic anechoic chamber used from microwaves to millimeter-waves is explained, and the ultra broadband wave absorbers for these electromagnetic anechoic chambers are stated. The some recent results of measurement are shown to ascertain the performance of these absorbers at the sub-millimeter-waves.