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Method of calibrating a multiport amplifier, multiport amplifier allowing the implementation of such a method, and satellite comprising such an amplifier
Method of calibrating a multiport amplifier, multiport amplifier allowing the implementation of such a method, and satellite comprising such an amplifier
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机译:校准多端口放大器的方法,允许实施这种方法的多端口放大器以及包括这种放大器的卫星
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摘要
A method of calibrating a multiport amplifier comprising a plurality of input ports, a plurality of power amplifiers linked to input ports by a matrix distributing signals, a plurality of output ports linked to the power amplifiers by a matrix recombining signals and a plurality of elements for weighting the signals associated with the power amplifiers, comprises: determining a normalized mean cross-correlation between an output signal present at the output port, taken as reference, and the signals present at the other output ports; and iteratively adjusting weights of the weighting elements so as to minimize the normalized mean cross-correlation or to render it less than a predetermined threshold. A multiport amplifier comprising a calibration module configured or programmed to implement such a calibration method, and a satellite for telecommunications whose payload comprises such a multiport amplifier, are also provided.
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