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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| Main Author | |
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| Format | Patent |
| Language | Chinese English |
| Published |
13.06.2012
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| Subjects | |
| Online Access | Get full text |
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| Abstract | 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. |
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| AbstractList | 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. |
| Author | HELLBERG RICHARD |
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| Snippet | 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... |
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| SubjectTerms | AMPLIFIERS BASIC ELECTRONIC CIRCUITRY ELECTRICITY |
| Title | Method and arrangement in a mobile communications system |
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