Method and arrangement in a mobile communications system

The invention is based on the fact that the current output from a DDB controlled amplifier in backoff, i.e. for low amplitudes, is reduced more or less linearly with the amplitude of the signal to be amplified. Therefore, it is enough to use smaller amplifiers which are able to output the necessary...

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Bibliographic Details
Main Author HELLBERG RICHARD
Format Patent
LanguageChinese
English
Published 13.06.2012
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Summary:The invention is based on the fact that the current output from a DDB controlled amplifier in backoff, i.e. for low amplitudes, is reduced more or less linearly with the amplitude of the signal to be amplified. Therefore, it is enough to use smaller amplifiers which are able to output the necessary RF current. Hence, according to the present invention, the total DDB amplifier is divided into smaller parts that are coupled to the output only when needed.
Bibliography:Application Number: CN200980161464