A feed scanning based APC technique for compact antenna test ranges

The measurement accuracy of a compact antenna test range (CATR) depends on the level of spurious signals. To improve the measurement accuracy, several error compensation methods have been developed, but most of them are not feasible at submillimeter wavelengths. This paper introduces an error compen...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2005-10, Vol.53 (10), p.3160-3165
Main Authors: Viikari, V., Hakli, J., Ala-Laurinaho, J., Mallat, J., Raisanen, A.V.
Format: Article
Language:English
Subjects:
Accuracy
Antenna feeds
Antenna measurements
Antennas
Applied sciences
compact range
Error compensation
Exact sciences and technology
Holograms
Holography
Position measurement
Radiocommunications
Scanning
Submillimeter wave measurements
Submillimeter wave propagation
Submillimeter wave technology
Telecommunications
Telecommunications and information theory
Television stations
Test ranges
Testing
Transmitters
Transmitters. Receivers
Wavelength measurement
Wavelengths
Weight reduction
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Summary:The measurement accuracy of a compact antenna test range (CATR) depends on the level of spurious signals. To improve the measurement accuracy, several error compensation methods have been developed, but most of them are not feasible at submillimeter wavelengths. This paper introduces an error compensation technique for compact antenna test ranges, which is especially suitable at submillimeter wavelengths. The method is based on antenna pattern comparison (APC). In the original APC technique the antenna pattern is recorded several times at different positions of the quiet-zone field, and the corrected pattern is obtained by averaging the measured patterns. In the proposed method, the lightweight transmitter is moved instead of moving the heavy combination of the antenna under test (AUT) and the rotation stage. The feasibility of the method is studied and the method is tested with measurements in a hologram based compact antenna test range at 310 GHz. The accuracy provided by the proposed method is compared to the accuracy provided by the conventional APC. The accuracies provided by both methods are practically equal.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2005.856369