Nokia Mobile Phones Limited

Risto V&auml;is&auml;nen

Seppo Rosnell

Tapani Ekman

A direct voltage component of a signal which has been received and converted to a baseband is separated by a first separator in a signal line. Also the direct voltage components of both the signal preceding the separator and the signal following the separator are controlled by control signals. Thus a baseband signal line preceding the first separator can be direct current coupled.

Method and circuit arrangement for processing a received signal

A linear power amplifier arrangement is used for providing a selectable amount of amplification to a radio frequency signal to be amplified. The arrangement comprises a first parallel amplifier branch and a second parallel amplifier branch and means for conducting the radio frequency signal to be amplified selectably to one of the parallel amplifier branches. Additionally it comprises in the first parallel amplifier branch a series connection of a predistorter and a nonlinear amplifier, where said predistorter is arranged to compensate for the nonlinearity of said nonlinear amplifier.

Growing community of inventors

Salo, Finland

Risto Väisänen

Growing community of inventors

Salo, Finland

Risto V&auml;is&auml;nen

Risto Väisänen