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US08488718B2 Correction of distortions in an emission chain 有权
纠正排放链中的失真

Correction of distortions in an emission chain
Abstract:
An emission chain, comprising a processing pathway for an input signal which includes a digital signal decomposition according to N signal components, with N an integer greater than or equal to 2. The N signal components being converted from a digital form into an analog form and following distinct physical pathways that induce first respective delays on the N signal components. A delayed input signal is obtained by applying a second delay (τ) having a value greater than or equal to the maximum value of the first delays. Next, N correction delays (τ−τi) are applied respectively to the N signal components based on a comparison between said input signal delayed by the second delay and the signal to be emitted. Finally, the signal to be provided to a power amplifier is obtained by combining the N signal components obtained on completion of the previous step.
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