Bandwidth-constrained signal regulation method and device

Non-linear signal conditioning is provided by signal processing in at least 2 consecutive steps (10). In each step (10) an insertion source signal (41) is provided, which is treated non-linearly to fulfill certain restrictions in bandwidth and/or spectral mask. The insertion signal is combined with...

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Bibliographic Details
Main Author HELLBERG R
Format Patent
LanguageChinese
English
Published 25.04.2012
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Summary:Non-linear signal conditioning is provided by signal processing in at least 2 consecutive steps (10). In each step (10) an insertion source signal (41) is provided, which is treated non-linearly to fulfill certain restrictions in bandwidth and/or spectral mask. The insertion signal is combined with a main signal (21) using a reinsertion factor (k1-kn), as a correction of the main signal (21). The reinsertion factor of at least one step is larger than the reinsertion factor of a previous step. In particular embodiments, the reinsertion factor increases for each of the at least 2 steps. This principle can be applied to most non-linear signal processing, and for example in PAR reduction systems, dynamic drain bias PA systems, Doherty and Chireix PA systems and in Dynamic Gate Bias systems.
Bibliography:Application Number: CN200480044684