2000 Technical Papers

Application of the NIST 18 Term Error Model to Cylindrical Near-Field Antenna Measurements

Authors: Allen C. Newell, David Lee
Publication: AMTA 2000
Copyright Owner: NSI-MI Technologies

This paper describes error analysis and measurement techniques that have been developed specifically for cylindrical near-field measurements. A combination of analysis and computer simulation is used to show the comparison between planar and cylindrical probe correction. Error estimates are derived for both the probe pattern and probe polarization terms. The planar analysis is also extended to estimate the effect of probe position errors. The cylindrical measurement geometry is very useful for evaluating the effect of room scattering from very wide angles since scans can cover 360 degrees in azimuth. Using a broad beam AUT and scanning over a large y-range provides almost full spherical coverage. Comparison with planar measurements with similar accuracy is presented.

 

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