What are Antenna Positioners?

Antenna Positioners are used in EMC test environments to precisely control the placement and movement of antennas during radiated emissions and radiated immunity testing. These systems are designed to vary antenna height, azimuth, and polarization in accordance with standards such as CISPR 16 and IEC 61000-4-3. Accurate positioning is required to identify the maximum emission levels from a device under test and to ensure uniform field exposure during immunity testing. By enabling controlled and repeatable antenna movement, positioners support consistent and standards-compliant measurement procedures.

These systems typically provide adjustable height ranges, often from 1 meter to 4 meters or more, along with 360-degree rotation for azimuth scanning. Polarization control allows switching between horizontal and vertical orientations, which is necessary for capturing worst-case emission scenarios. Antenna Positioners are engineered to support various antenna types, including log-periodic, biconical, and horn antennas, and must handle different load capacities while maintaining mechanical stability and positioning accuracy.

Modern Antenna Positioners are equipped with motorized control systems that allow automated movement and integration with EMC test software. Features such as programmable positioning sequences, remote operation, and position feedback improve test efficiency and repeatability. High precision motors and control electronics ensure smooth motion and accurate positioning, while robust construction minimizes vibration and mechanical drift during measurements. These capabilities are essential for automated EMC test setups and large-scale compliance laboratories.

Antenna Positioners are widely used in anechoic chambers, semi-anechoic chambers, and open area test sites for EMC compliance testing across industries such as automotive, aerospace, consumer electronics, and industrial equipment. They are integrated with turntables, EMI receivers, spectrum analyzers, and signal generators to form complete EMC test systems. Their role in enabling precise antenna placement directly impacts the accuracy and reliability of radiated EMC measurements.

The Largest Database of Antenna Positioners

EMC Directory lists Antenna Positioners from the leading manufacturers. Use the parametric search tools to narrow down on Antenna Positioners based on your requirements. Once you find products that meet your specification, view product details, download the datasheet, compare products and request quotations. Inquiries generated via everything RF are directed to the manufacturers, who get back to you with a quote or information.