Swing arm over azimuth system

Swing Arm-over-Azimuth Systems

Features
  • Scan area 360° roll and 360° to 95° in azimuth
  • L-band to mmWave measurements
  • Automatic electronic alignment capability
  • Far-field, near-field, and holographic patterns
  • Far-field measurement options available
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Swing arm-over-azimuth systems are ideal system for measuring medium and low gain antennas up to 7.3 m (24 ft) in diameter. They are also well suited to perform testing of standalone antennas that fit inside this dimensional envelope.

  • Specifications
  • Applications
  • Capabilities
Construction Azimuth, roll, and pol rotation stages with “L” bracket (aluminum/steel)
Drive System Precision Stepper Motor
Scan Area 360° Roll and 360° to 95° in Azimuth
Maximum Antenna Load 75 kg to 27,216 kg (165 lb to 60,000 lb)
Maximum Antenna Diameter 0.5 m to 7.3 m (20 in. to 288 in.)
Resolution 0.01° to 0.0007° Azimuth, Roll and Pol
Position Repeatability 0.03° RMS to 0.015° RMS
Rotational Speed (Azimuth, Roll, Pol) 5°/s to 180°/s
System Controller NSI-MI controller with serial and parallel I/O interfaces
 Measurement Workstation Measurement workstation computer with large LCD monitor
 Stepper Motor Power Amplifier EIA 483 mm (19 in.) rack mount.
 Motor Cables Quick-connect; 12 m (40 ft)
 Scanner Absorber Absorber Kit (127 mm (5 in.) pyramidal)
 Probe Optional
 RF Cables 20 GHz RF Cables
 Rotary Joints Qty. 3 - DC-26.5 GHz, (Azimuth, Roll, Pol)
 Supported RF Devices NSI-MI Receiver Subsystem or selection of Keysight, Rohde & Schwarz and Anritsu VNA's (contact NSI-MI for a complete list)
 Power 100-240 VAC switchable, 50/60 Hz, 500 watts
  
Dimensions

Width 1.8 m to 9.4 m (72 in. to 371 in.)
Depth 1.8 m to 5.1 m (72 in. to 201 in.)
Height 1.9 m to 7.0 m (74 in. to 276 in.)
Weight   337 kg (750 lb) to 3,085 kg (6,800 lb) approx.
The system interfaces with a wide variety of RF equipment and is capable of measuring amplitude and phase patterns from X-band to mmWave frequencies. The systems include NSI-MI Antenna Measurement Software.

The system software runs on a Windows-based measurement workstation and provides automatic setup of scans based on measurement parameters and desired output. Measured data can be processed for far-field or holographic patterns yielding complete characterization of the antenna’s performance. A single data set provides information on antenna gain, side lobe structure, beam pointing and cross polarization.

The systems can be supplied with a variety of options to enhance system performance.