Near Field Range
Sections

Test Facilities
   Near Field Range
   Far Field Range
   Antenna Chamber
   Turntable Range
Contacts
Reservations

The Planar/Cylindrical Near-Field Range (PCNFAR) consists of a planar and cylindrical near-field range that can scan over an approximate 10' X 20' planar area or scan a 10' vertical plane in conjunction with a +/- 180 degree azimuth scan when using cylindrical mode. It features precision stepper motor control with a Z-plane laser sensor for post data processing correction of planarity errors.

The PCNFAR is a 21'x21'x12' anechoic chamber. For added convenience, the chamber allows access through a 10'x12' roll-up overhead door. The chamber is covered in 12" and 24" pyramidal absorber, with several roll-around panels for measurement-specific placement requirements.
Options

The scanner has a large working area (~120" x ~240") that allows Z-axis post-processing correction via laser plane mapping during measurement. The scanner is also capable of commercial near-field/far-field and holographic processing. It has positioning accuracy of +/- 0.002" in all three planes. Additional azimuth axis positioner, software control, and processing are available for cylindrical near-field measurements.

38 GHz Antenna Data being processed on-site during testing using NSI NF Measurement Software.

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Antenna with Radome being measured on Near-Field Range
Both local and automatic control is available for engineering/development requirements or for programmed extensive measurements for both planar and cylindrical near-field measurements. The probe polarization rotator on the scanner may be controlled manually or automatically during measurements. An auxiliary computer is available for processing prior measurements during current data acquisitions.

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