2022 Technical Papers

A Trade Study on Quasi Far-Field Accuracies and Measurements

Author: Marion Baggett
Publication: AMTA 2022
Copyright Owner: NSI-MI Technologies

Abstract— Recent papers have addressed making far-field measurements at much less than the traditional far-field distance, particularly for 5G MIMO test articles. These papers have focused on main beam measurements only, such as Total Radiated Power (TRP) and have stated that other normal antenna pattern metrics, such side lobe level measurements are not appropriate for this shortened distance. These papers have addressed fixed error levels acceptable for this quasi far-field technique. This paper will present main beam error from two other perspectives, looking at agreement with the previous efforts. In addition, the paper will present a trade study in terms of chamber size, measurement durations and measurement methods between the quasi far-field, compact range, and spherical near-field approaches. This trade study will cover five representative test articles in the C, Ka, and V frequency bands for 5G applications.

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