Application of a Circular Arch for Spherical Near-Field Antenna Measurements from 1 to 60 GHz

Authors: Doren W. Hess, Jeffrey A. Fordham, Scott Pierce, Evan Langman
Publication: 28th ESA Antenna Workshop
Copyright Owner: NSI-MI Technologies

MI Technologies has developed and constructed two of a new generation of spherical near-field ranges that expand the regime of measurement requirements to which the spherical near-field technique can be applied. This evolutionary design permits measurements to be made on large apertures -- up to 10.0 m (32 ft) and at frequencies up to 60 GHz under conditions of constant gravity loads over 4π SR of coverage. Here we report on developments leading to a spherical near-field scanning system that has been built and realized for apertures up to 3.66 m (12 ft) and frequencies between 2.0 and 45 GHz which corresponds to an electrical size of 550 wavelengths.

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