Short Note On The Use Of Spherical Modal Filtering to Remove RF Leakage From SNF Measurements

Authors: Jeffrey A. Fordham, David Musser
Publication: EuCAP 2014
Copyright Owner: IEEE

Near-field antenna measurement accuracy is reduced by various factors associated with the antenna test range environment and instrumentation hardware used. One such factor is associated with energy leakage in the RF hardware used in the measurement. In spherical near-field measurements, the sidelobe accuracy can be greatly impacted by RF leakage.

In this brief note on the use of spherical modal filtering and the IsoFilterTM technique, it will be shown how the IsoFilterTM technique can be used to reduce the impact of leakage and stray signals in spherical near-field measurements.

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