Variable gain control circuit for linear applications |
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| Authors: | Maula K.L.I. |
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| Affiliation: | Nokia Res. Center, Espoo; |
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| Abstract: | A new, simple gain control circuit is introduced for linear applications. It utilises a differential stage for the gain control function and a predistortion circuit to maintain linearity. The circuit provides a wide dynamic range and low intermodulation levels. Suitable applications are WCDMA cellular phone circuits such as variable-gain amplifiers or driver stages with gain control for power amplifiers |
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