The electromagnetic wave shielded chamber Out the shielded performance measurement device of the entrance and inside it leads to the shielded

摘要

PROBLEM TO BE SOLVED: To provide a device and method for measuring the shielding performance of an electromagnetic wave shield room entrance door capable of periodically and safely measuring the shielding performance of the electromagnetic wave shield room entrance door even in use.;SOLUTION: A front room 7 having an internal entrance door 8 and an external entrance door 9 communicating with the shield room 6 and an outdoor section is arranged in the electromagnetic wave shield room 6, respectively, transmitting antennas TX-1 to TX-n and a human sensitive sensor 3 are installed in the front room 7, and receiving antennas RX-1 to RX-n are installed in the electromagnetic wave shield room 6 and the outdoor section, respectively. Each of the entrance doors 8 and 9 is closed, electromagnetic wave is transmitted from the transmitting antennas TX-1 to TX-n to the receiving antennas RX-1 to RX-n only when the human sensitive sensor 3 recognizes that there is no person in the front room 7, and the shielding performance of the entrance doors 8 and 9 can be measured.;COPYRIGHT: (C)2009,JPO&INPIT