Electromagnetic anechoic chamber with an inner electromagnetic wave reflection surface and an electromagnetic wave absorption small ball disposed in the chamber

摘要: For effectively suppressing echo of an electromagnetic wave emitted from device (24) disposed in a closed space (13) which is defined by shielding wall (10), anechoic chamber comprises absorption member (28) the space. The has inner surface reflects into as reflected wave. directed to particular position located at position. Preferably, formed along substantially ellipsoidal shape having first and second focus point (14, 16). are points, respectively.