Antenna Pattern Correction Technique Based on an Adaptive Array Algorithm

• Published in: IEEE transactions on antennas and propagation Vol. 55; no. 8; pp. 2194 - 2199
• Main Authors: Viikari, V., Kolmonen, V.-M., Salo, J., Raisanen, A.V.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.08.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptive algorithms; Adaptive arrays; Algorithms; Antenna arrays; Antenna measurements; Antennas; Applied sciences; Arrays; compact range; Directive antennas; Displacement measurement; error compensation; Exact sciences and technology; Holograms; Holography; Physical tests; Position measurement; Radiocommunications; Rotation measurement; Submillimeter wave measurements; Synthesis; Telecommunications; Telecommunications and information theory; Testing; Weight measurement; Antenna measurements; Hologram; Averaging method; error compensation; Submillimeter wave measurement; Adaptive algorithm; Adaptive antenna arrays; submillimeter wave measurements; Adaptive method; Accuracy; Weighting; compact range; System synthesis; Error correction; Receiving antenna; Rotation angle; Antenna radiation patterns; Antenna synthesis
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2007.901844

An antenna pattern correction technique is presented that is based on an adaptive array algorithm. In the method, the antenna pattern of the antenna under test (AUT) is measured several times at different positions in the quiet-zone. The corrected antenna pattern is obtained by taking a weighted average of the measured patterns. An array synthesis algorithm is employed for obtaining the averaging weights at each rotation angle of the AUT. The weights are adapted specifically for a given AUT. The adaptive array correction technique is demonstrated in a hologram based compact antenna test range (CATR) at 310 GHz with both a synthetic antenna and a physical test antenna. For verification, the accuracy provided by the adaptive array correction technique is compared to that provided by uniform weighting.