MVG Introduces Multi-Axis Rotary Positioners for Testing Direction Finding and Radar Antennas

MVG Introduces Multi-Axis Rotary Positioners for Testing Direction Finding and Radar Antennas 712370

Microwave Vision Group has developed a set of new multi-axis medium-duty positioners with virtual EL axis. These positioners enable the rotation of a device under test around its phase center by means of a unique virtual elevation axis. This virtual axis ensures that the mechanical support system remains behind the DUT as it is measured. Simultaneously, a 360° rotation in azimuth is performed, with the combined movements resulting in a fast and accurate measurement of the radiation pattern, antenna efficiency, and polarization without interference from the positioning structure.

These positioners are essential elements of antenna testing equipment that are necessary in the process of ensuring the reliability of antennas before they are integrated into any autonomous device. Positioners, like other equipment in the test chamber, can be sources of error in test results. For the most accurate measurements, such as for direction-finding antennas, it is therefore crucial to keep the positioner structure out of the measurement periphery.

Key features of these positioners include:

Virtual elevation axis
No interference from the structure on DUT measurement results
Optimum performance relative to the size
Vertical load up to 88 lbs (40 Kg)
AUT mounting interface diameter - 544 mm
Angular positioning accuracy
Low backlash design
Closed-loop servo control
Precision bearings
Industry-standard wiring
Tachometer for optimum speed regulation & control
Wide operating temperature range:32° F to 104° F (0° C to 40° C)
Fully enclosed design of drive gear train & data take-off
Wide variety of available options

These new virtual EL/AZ/roll positioners have been specifically designed for testing direction-finding or radar antennas. Increasingly implemented in autonomous vehicles for collision avoidance while triggering automatic features in conjunction, these antennas can also be successfully deployed on mobile equipment such as forklifts, mining vehicles, or port machinery.

Key applications: