Near-Field Systems

As pioneers in the field, NSI-MI Technologies is the world leader in near-field measurements. We pride ourselves in delivering the best near-field systems on the market, engineered with state-of-the art technology that has been honed from decades of knowledge and experience. Paired with our proprietary RF subsystem, our near-field solutions are optimized for accuracy, speed, and frequency versatility, and capable of advanced error correction techniques. Our systems are available in a full range of standard configurations, as well as can be customized to your specific application.

Vertical Planar Scanner Systems

Vertical Planar Near-Field Measurement System

Our planar scanner line ranges from portable, tabletop configurations, to large precision scanners used for satellite or radar antennas.

Small Vertical Planar Scanners
Medium Vertical Planar Scanners
Large Vertical Planar Scanners
Pre-Configured Systems

Horizontal Planar Scanner Systems

Horizontal Planar Near-Field Measurement Systems

Horizontal scanners incorporate a next generation, precision closed-loop servo drive system and a highly engineered structure.

Small Horizontal Planar Scanners
Medium Horizontal Planar Scanners
Large Horizontal Planar Scanners

Cylindrical Near-Field Scanner Systems

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NSI-MI’s cylindrical scanners are well suited to testing fan beam, cellular base-station, stacked dipole arrays, and antennas that have broad azimuth and narrow elevation plane patterns. They are constructed to the highest standards and are based on years of experience.

Small Size Scanner Systems
Medium Size Scanner Systems
Large Size Scanner Systems

Spherical Near-Field Scanner Systems

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NSI-MI offers a large variety of Spherical Nearfield Antenna Measurement Systems of various sizes and configurations. The most common is the “Phi over Theta” systems where the AUT is mounted on the Phi positioner, which in turn is mounted on an L-bracket, mounted on a Theta positioner. In this case, the AUT is required to move for both the Theta and Phi motions, and the probe remains fixed. The second configuration we support is the “Theta over Phi” configuration. In this configuration, the probe is moved in an arc above the antenna to provide the Theta motion, and the AUT is mounted on a positioner and rotated to provide the Phi motion. A third configuration we support is the “Stationary AUT” configuration, where the probe is moved to provide both the Theta and Phi motions, and the AUT remains fixed. This is ideal when rotating the AUT is difficult or impossible.

Roll over Azimuth Systems
Swing Arm over Azimuth Systems
Stationary AUT Systems
Arch over Azimuth
Pre-Configured Systems

Combination Systems

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NSI-MI offers systems ranging in size from tabletop designs to large precision systems for a wide variety of applications, such as aerospace and defense, commercial, wireless, automotive and many others. Our systems are available in a wide variety of standard configurations as well as being easy to customize to your specific application.

Multi Axis Robotic Antenna Measurement System


1125 Satellite Blvd., Suite 100
Suwanee, GA 30024 USA

+1 678 475 8300
+1 678 542 2601

Los Angeles

19730 Magellan Dr.
Torrance, CA 90502 USA

+1 310 525 7000
+1 310 525 7100


Unit 51 Harley Rd.
Sheffield, S11 9SE UK

+44 7493 235224


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