Anechoic Chambers

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CATR&DFF 2 in 1 Solution | BJ-8601 mmWave Anechoic Chamber for OTA test

● Quiet zone up to φ400mm for 5G black box measurement ;

● For various size DUTs up to 100 kg;

● Optional thermal enclosure is available for Extreme Condition from -40 to 100℃;

● For lab test application.

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● BJ-8601 test system includes a medium size anechoic chamber, and a compact antenna test range ( CATR) designed for mmWave OTA test in a lab environment, covers frequency range from 24 to 90GHz;

● The high precision reflector provides a large quiet zone size of 400mm for a black box testing;

● Combing with a high accuracy 4-axis positioner, the system is able to provide fast and accurate antenna measurement for various size DUTs up to 100 kg;

● Fast measurement capability via TTL hardware signal trigger;

● The CATR supports single or multiple feed antennas to measure different signals at the same time;

● The system is capable of switching between indirect far field and direct far field measurement method;

● Optional thermal enclosure is available for Extreme Condition from -40 to 100℃.

Machanical Specification 

Inner Dimension


Outer Dimension

4000(W)*2000 (L)*2415(H)mm

Front Door Dimension


Right Door Dimension


Net Weight


Gross Weight


DUT Size

Max:   900(L)*650(W)*300(H)mm

Loading Capability

Max: 100kg


RF Performance 

Shielding effectiveness

24~90GHz >70dB

Absorber   Reflectivity



Reflector and Feed Antenna Specification 


Offset parabola, blended   rolled edges

Reflector Size

Option 1:800 x 800 mm 

Option 2:900 x 900 mm

Frequency Range

24 ~ 90GHz

Quite Zone Quality


Amplitude taper: ≤ 1dB

Amplitude ripple: ≤±0.5dB

Phase variation:≤ ±5°

Cross-Pol isolation: ≤-27dB

Feed Antenna

Single feed: 800mm or 900mm reflect

Multi   feed:900mm reflector only

Working Freq:  24~50GHz(Extendable to 90GHz by Changing Feed   Antenna)


Material: Steel beam+Al alloy

Cross-Pol   isolation ≤-35dB


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