Spherical Near-Field Arch Roll Scanner
Description
The Spherical Near-Field Arch Roll Scanner is an ideal system for measuring radiation characteristics of non-moving antennas which require a full hemisphere coverage and can not be tested using the planar near field technique. A traditional spherical near-field system would require the antenna to either move in one or two axes, however the NSI-MI scanner uses a novel dual-axis probe motion design to allow the antenna to remain stationary which is ideal for satellite or radar antenna testing. The system interfaces with a wide variety of NSI-MI, Keysight, or Rohde & Schwarz RF equipment. The Antenna Measurement 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.
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Features
- Radiation Pattern Testing of Fixed Mounted Antennas
- Scanning arch provides accurate probe motion over ±95 degrees in theta
- Rotator provides 360 degree phi rotation of arch
- Automatic Electronic Alignment Capability
- Dynamic on-the-fly Probe Position Correction Subsystem
- Multi-beam, Multi-Frequency Control of RF Subsystem
- NSI-MI Data Acquisition & Processing Software
