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Solution NT-OTA2000A mechanical mixing reverberation chamber

NT-OTA2000A mechanical mixing reverberation chamber

Summarize

NT-OTA2000A is composed of three parts: reverberation room hardware, test instrument and test software. Its small size, the box can be moved as a whole, the internal use of double horizontal agitator, improve the utilization of internal space, suitable for base stations, mobile phones, antennas and other products omnidirectional index test.

Product Description Technical indicators

Application Scenario

NT-OTA2000A is composed of three parts: reverberation room hardware, test instrument and test software. The shield size and DUT installation mode are designed according to the size of MMwave base station and human operation requirements. The test software is visual and user-friendly, and can support common instruments on the market. The shield is designed with galvanized steel plate with high Q value, and it is necessary to design the shield specially for millimeter wave to ensure the shielding efficiency. The agitator adopts folding agitator to achieve efficient mixing of the field, and the precision of the supporting motor should reach 0.1 degrees; The rotating table of the measured object should drive the measured part to rotate intermittently or continuously to achieve more uniform spatial sampling; The transceiver antenna is used for testing, and the reference antenna is used to calibrate the circuit loss.

The test software based on the reverberation chamber test system can be used for the road loss calibration, coherent bandwidth calibration, passive antenna efficiency, proximity effect, test uncertainty, TRP, SEM, ACLR, Spurious, Throughput, EVM, etc., all test indicators finally delivered meet the 3GPP requirements.

Main technical parameters

Technical index：

project	Specification indicator description
Conventional indicators
frequency range	18–90 GHz
Measuring the antenna	Support 18GHz ~90GHz, including calibration antenna and test antenna
shielding properties	≥80dB @ 23.6~90GHz
power dissipation	Typical value of 250 W
weight	500 kg (typical value)
Appearance size	W * H * D: 1900 * 1800 * 1450 mm (support for split transportation, field installation)
Passive measurement accuracy	0.3 dB (typical value)
TRP certainty of measurement	0.3 dB (typical value)
TIS certainty of measurement	0.5 dB (typical value)
repetitiveness	0.1 dB (typical value)
testing efficiency	Less than 5 min / frequency band
DUT maximum dimensions	WHD: 10001000600 mm
revolving stage	Diameter 600mm, height 230mm, load 50kg, corner accuracy 0.5°, RJ 45 interface control, table with RF port, power AC220V, DC100V, optical fiber, USB interface and network port
metro barrier door	Manual rotating screen door, net opening size: 800 * 1500mm (W * H)
Overwall interface	Copper bolt, light wave guide, 2.4mm/k2,1.85mm/k2, 1.0mm/k * 2, BNC / k * 2
Ventilation waveguide window	Outer dimension 0.38m*0.38m, quantity 2
filter	Single-phase AC AC220V / 16A / 50Hz, DC DC 0-100V / 32A
supervisory control	Autofocus infrared camera, not less than 2 million pixels, 26 x zoom, display resolution 1920 * 1080, cloud head 360° rotation, 2T storage memory, 42 memory LCD display.
Temperature and humidity records	Integrated in the test software interface
pigment	Spray plastic according to the color number specified by the customer