The DUO5 from mmWave Test Solutions is a 3D Antenna Positioner/Gimbal that is designed for wide-beam and narrow-beam antenna and radar measurements. It can hold a DUT with a width up to 50 cm (20″) that weighs less than 14 Kg (31 lb). It has material transparency in the upper arms to reduce stray reflections. All metal and motors are located at the bottom of the positioner. All screws are in polymer plastics with fiberglass, and the mechanical structures are CNC-machined in polymer plastics (PET, POM/Delrin) for high rigidity and strength. Even the AUT/DUT arm bearings are in POM/Acetal instead of steel. The metal-free upper arm design is well suited for sensitive wide beam applications. It can be used for testing 5G-NR, gNodeB, CPE, and Fixed Wireless Access applications.
The positioner has rotational platforms (turntables) and gears that support high load, high resolution, and high repeatable accuracy. It is paired with a dual-motor setup, one for each of the elevation arms and single-stage gears for the highest accuracy and lowest backlash. The system uses an intelligent closed-loop motor to ensure that slip/stall errors do not occur.