It can provide electromagnetic environment and testing conditions for measurement of tested antenna's radiation performance.

Function:
The anechoic chamber built according to this proposal, can provide electromagnetic environment and testing conditions for measurement of tested antenna's radiation performance. This chamber can effective eliminate outside electromagnetic interference and other reflection interference. It can simulate free space environment required by antenna measurement, in order to obtain reliable & standardized test data, ensuring the accuracy of antenna measurement.

Composition:
According to the function, anechoic chamber’s main body can be divided into near-field antenna measurement microwave anechoic chamber and antenna measurement control room. Considering work type and usage, we would like to choose a rectangular anechoic chamber. anechoic chamber’s size: 7.2m×6.5m×5.2m(net size of shielding space); control room’s size: 4.0m×3.5m×3.3m(No shielding requirements). The steel structure of the chamber should be strict aseismatic designed and calculated, against level 8 earthquake intensity. Scanner’s foundation should have vibration isolation measures, and prevent uneven settlement solutions. Antenna’s each index test will be performed in the anechoic chamber, and control room is the operation & control center of each testing task, processing the received test data. Entry panel and shielding penetration tube are installed
between control room and anechoic chamber, for exchange. Microwave anechoic chamber mainly contains shielded body, absorbing materials, shielding door, power supply & distribution and lighting system, ventilation and air-condition system, video surveillance and voice transmission system, fire alarm and fire fighting system, shielding penetration tube, entry panel and grounding system, furthermore, it also contains other equipments and facilities, such as: positioner’s foundation, scanner’s foundation, cable trench and cable pipes.