Active Antenna Load Management

    Test with Confidence™

Active Antenna Load Management
Active Antenna Load Management (Front-Left View) Active Antenna Load Management (Rear-Left View) Active Antenna Load Management (Rear View)


Model: AALM

Active antennas that contain on-board amplifiers can generate significant RF power that is radiated during testing. The control of this radiation is not only a human safety consideration, but also requires test environment management which can affect the validity of test data if done poorly. For active antennas that are also phased arrays with beam steering ability, there is a complex calibration process typically done with the use of near-field scanners. The AALM allows for a check of the operation of the modules of the array prior to and during the calibration procedure.



  • Production phased array antenna testing
  • RF power monitoring and control
  • Compact radiation test environment
  • Ensures facility and personnel safety


  • An integrated gain standard for quick antenna gain verification
  • One or more RF sensors for power level verification of the antenna
  • High power RF absorber (with optional forced air cooling)
  • Honeycomb air vents equipped with exhaust air fans
  • EMI gasket to ensure RF attenuation to safe levels
  • RF and Motion safety monitor
  • Fire monitoring and suppression system
  • RF safety shutoff system
  • Infrared camera for power level monitoring

The NSI-MI AALM products are lined with pyramidal microwave absorber. This material typically can withstand 0.8kW/m2 (0.5W/in2) of RF power absorption without any forced air cooling. High power absorber allows for 8kW/m2 (5W/in2) of RF power absorption with forced air cooling. These high-power solutions require careful temperature monitoring, fire detection and suppression systems as well as automated emergency shut-offs.

Two typical AALM systems are shown below:

16 Gain Standards

16 Gain Standards

Front view of AALM showing 16 integrated gain standards, one RF radiation sensor and copper gasketing around the edges.
Stand and Structure

Stand and Structure

Side view of the AALM showing the stand and structure of both enclosures.
X-Band Operation

X-Band Operation

X-band operation of high power radar antenna.
Dimensions are roughly 2m (W) x 2m (H) x 3m (L)


1125 Satellite Blvd. NW,
Ste. 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


Stubley Lane,
Dronfield, S18 1DJ UK

+44 1246 581500


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