Gain Comparison Measurements in Spherical Near-Field Scanning

Authors: Doren W. Hess, John R. Jones

Publication: AMTA 1983

Copyright Owner: NSI-MI Technologies

A set of near-field measurements has been performed by combining the methods of non-probe-corrected spherical near-field scanning and gain standard substitution. In this paper we describe the technique used and report on the results obtained for a particular 24 inch 13 GHz paraboloidal dish. We demonstrate that the gain comparison measurement used with spherical near-field scanning gives results in excellent agreement with gain comparison used with compact range measurement. Lastly we demonstrate a novel utilization of near-field scanning which permits a gain comparison measurement with a single spherical scan.