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Two useful approaches that allow noticeable reduction of the overall measurement time both in the far-field measurements and in the spherical near-field technique, while minimally compromising on the measurement accuracy, are presented and discussed.
Different time-saving scanning schemes for measurement of electrically large antennas by spherical near-field technique are considered and analyzed. Significant time reduction is achieved through thinning of the scanning grid, which still allows obtaining accurate results for typical aperture-like antennas such as reflectors and antenna arrays. The considered scanning schemes were tested on experimental...
A new and effective method for reduction of truncation errors in partial spherical near-field (SNF) measurements is proposed. The method is useful when measuring electrically large antennas, where the measurement time with the classical SNF technique is prohibitively long and an acquisition over the whole spherical surface is not practical. Therefore, to reduce the data acquisition time, partial sphere...
Characteristics of electrically small loop antennas were measured by different techniques and the results were compared in-between. The techniques employed were: a single-probe spherical near-field technique, a multi-probe spherical near-field technique, a reverberation chamber, and a Wheeler cap technique. The results were compared with regard to the measurement accuracy, measurement speed, and applicability...
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