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Calibration Proposal for New Antenna Array Architectures and Technologies for Space Communications

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4 Author(s)
Salas Natera, M.A. ; Grupo de Radiacion, Univ. Politec. de Madrid, Madrid, Spain ; Ramon Martinez Rodriguez-Osorio ; de Haro Ariet, L. ; Sierra Perez, M.

In large antenna arrays with a large number of antenna elements, the required number of measurements for the characterization of the antenna array is very demanding in cost and time. This letter presents a new offline calibration process for active antenna arrays that reduces the number of measurements by subarray-level characterization. This letter embraces measurements, characterization, and calibration as a global procedure assessing about the most adequate calibration technique and computing of compensation matrices. The procedure has been fully validated with measurements of a 45-element triangular panel array designed for Low Earth Orbit (LEO) satellite tracking that compensates the degradation due to gain and phase imbalances and mutual coupling.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )