Microwave anechoic chamber is mainly used to simulate free space environment for EMI testing.

Technical parameters & requirements:

Function: provide guarantee conditions for EMI pre-test.Quit zone of EMI pre-test: Diameter,0.5m; Height, 0.5m (0.8~ 1.3m’s distance far from the floor)Working frequency range: Radiated emission pre-test 500MHz~18GHz

Normalized Site Attenuation NSA: In the range of 500MHz~1GHz,it can meet the requirements of EN50147-2-1996 and ANSIC63.4 1992,and NSA≤±4dB. While, in the range of 1~18GHz,it can meet the requirements of CISPR16-1-4,SVSWR is better than 6dB.

Field Uniformity(FU): 500MHz~18GHz, it can meet the requirements of IEC61000-4-3-1995 and EN61000-4-3-1996, i.e., on the 0.5mX0.5m supposed vertical plane surface 0.8m above ground in the EUT zone, with 3 meters test distance, it requires that 75% of the uniformly divided 16 points’ field intensity tolerance should be within 0~+6dB.

In the semi/full microwave anechoic chamber, without EUT, and while turning on positioner, antenna tower, CCTV sensor and lamps, the test level of the space background noise should be at least 10dB lower than the limit level Class B stipulated in standard EN55022, GB9254-1998 under frequency of 500MHz~1GHz.

Shielding Effectiveness of Shielding Body:Magnetic field 14KHz≥70dB100KHz≥100dB1MHz≥100dBPlane wave 10MHz≥100dB10MHz-1GHz≥100dBMicrowave 1-10GHz≥100dB

Configuration of 3m EMI chamber:1,Shielding body’s size: 5m×4m×2.5m2,Electric locked shielding door (Opening size): 1. 5m×2.1m One set3,Power filter: FNF102C50(Single cable) Four pcs                        A group of three-phase AC power (380V, 50A, 50Hz), used for the tested devices4,Logical filter(FNF102C50) One pcs5,Entry panel Two sets, Configured with SMA type 2pcs, optical waveguides 2pcs and optical waveguide connectors2pcs6,Ventilation Honeycombs 300mm×300mm Four sets7,Video and monitoring system One set        Optical video(with RS-232 data transfer function) One couple        Optical waveguides One pcs8,Optical switch One couple9,EMC test bench(Optional) One pcs10,Indoor electrical Cubicle switchboard (contains all air switches) One set     Cold light spotlight Two pcs     Mobile lighting One pcs     Wall switch One pcs     Power socket Two groups     Electrical lines One group11,Absorbing materials      Stick up absorbing materials on four walls and ceiling, set up mobile absorbing materials between the antenna and tested objects.     Diameter 0.6m positioner(Optional) One set     Positioner’s double-controller(Optional) One set     1~1.5m lifting antenna tower(Optional) One set     Controller of antenna tower(Optional) One setAbsorbing materials(300 mm high-angle cone) 80m2

3m EMI Testing Chamber