Nxp B.v.

Manel Collados

Jan Van Sinderen

Nenad Pavlovic

Jan Sophia Vromans

Xin He

Ravichandra Karadi

Melina Apostolidou

A quadrature out-phasing system comprising: a first baseband signal modifier () arranged to receive a first baseband signal component () and output a first constant envelope RF carrier () and a second constant envelope RF carrier (); and a second baseband signal modifier () arranged to receive a second baseband signal component () and output a third constant envelope RF carrier () and a fourth constant envelope RF carrier (). The system may further comprise: a first signal combiner () arranged to combine the first constant envelope RF carrier () and the second constant envelope RF carrier (), and arranged to output a first RF PWM signal (); and a second signal combiner () arranged to combine the third constant envelope RF carrier () and the fourth constant envelope RF carrier (), and arranged to output a second RF PWM signal ().

Decomposer and amplifier

The present application relates to at least one digitally controlled oscillator and a data modulation device. More particularly, the digital polar transmitter comprises at least one digitally controlled oscillator configured to generate at least one frequency. The digital polar transmitter comprises a data modulation device, wherein the data modulation device comprises at least one data input terminal, at least one output terminal, and at least one frequency input terminal, wherein the output terminal is connected to the digitally controlled oscillator. The digital polar transmitter comprises a phase measuring device configured to measure phase information from the output signal of the data modulation device for every frequency sample. The digital polar transmitter comprises a phase error detecting device configured to detect a phase error at least depending on the measured phase information, wherein the phase error detecting device is configured to apply the detected phase error to the output signal of the data modulation device.

Polar transmitter

A system and method for transmitting a baseband real signal with a non-constant envelope using a polar transmitter involves decomposing a baseband real signal into a non-constant envelope signal of the baseband real signal and a sign signal of the baseband real signal, where the sign signal restores zero crossing regions of the non-constant envelope signal, modulating a carrier signal with the sign signal of the baseband real signal to generate a modulated signal, converting the non-constant envelope signal of the baseband real signal into a voltage signal using a voltage controlled supply regulator, amplifying the modulated signal into an amplified signal based on the voltage signal, and transmitting the amplified signal to an external wireless device.

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Eindhoven, Netherlands

Manel Collados