Electromagnetic anechoic chamber

Abstract

An electromagnetic anechoic chamber includes an anechoic chamber, an adjusting apparatus, and an antenna device. The anechoic chamber includes a bottom wall defining a rectangular receiving space, and a shielding plate supported on a bottom wall. The adjusting apparatus is received in the receiving space and includes a supporting bracket, two adjusting pulleys respectively installed to two opposite ends of the supporting bracket, and a transmission belt wrapping around the adjusting pulleys. The antenna device includes a base slidably supported on the supporting bracket and an adjusting pole perpendicularly extending up from the base. The adjusting pole extends through the transmission belt and the shielding plate. A motor drives one of the adjusting pulleys to rotate, the transmission belt is moved through the adjusting pulley to move the antenna device.

Dependencies are inferred from the claim text.