Abstract: The invention relates to a mixer for generating an analog output signal XOUT from an analog input signal XIN using a mixing signal having a mixing frequency fMIX, the mixer comprising: a scaler being configured to sample the analog input signal XIN at a plurality of discrete points in time k with a sampling frequency fS to obtain a sampled analog input signal XIN[k] having a continuous signal value, and to generate the analog output signal XOUT having a continuous signal value by scaling the sampled analog input signal XIN[k] on the basis of a plurality of scaling coefficients A[k], wherein the scaling coefficients A[k] are a time-discrete representation of the mixing signal.

Abstract: A device for processing digital signals is provided. The device comprises a digital signal source and a converter circuit having a current supply. The digital signal source outputs a codeword. The converter circuit receives the codeword from the digital signal source, receives a current at the current supply, and generates an output signal based on the codeword. The current is generated in accordance with the codeword.

Abstract: The present invention provides a device for processing digital signals. The device comprises a digital signal source and a converter circuit having a current supply. The digital signal source outputs a codeword. The converter circuit receives the codeword from the digital signal source, receives a current at the current supply, and generates an output signal based on the codeword. The device generates the current based on the codeword.

Abstract: The present invention provides a device for processing digital signals. The device comprises a digital signal source configured to output codewords, a converter circuit configured to generate an output signal based on a first codeword received from the digital signal source, and a feed forward circuit configured to generate an output current based on a second codeword received from the digital signal source. The output current generated by the feed forward circuit is connected to a current supply of the converter circuit. The digital signal source is configured to generate the second codeword based on the first codeword in order to compensate for variations of a supply current of the converter circuit.

Abstract: The invention relates to a mixer for generating an analog output signal XOUT from an analog input signal XIN using a mixing signal having a mixing frequency fMIX, the mixer comprising: a scaler being configured to sample the analog input signal XIN at a plurality of discrete points in time k with a sampling frequency fS to obtain a sampled analog input signal XIN[k] having a continuous signal value, and to generate the analog output signal XOUT having a continuous signal value by scaling the sampled analog input signal XIN[k] on the basis of a plurality of scaling coefficients A[k], wherein the scaling coefficients A[k] are a time-discrete representation of the mixing signal.

Abstract: The present invention provides a device for processing digital signals. The device comprises a digital signal source configured to output codewords, a converter circuit configured to generate an output signal based on a first codeword received from the digital signal source, and a feed forward circuit configured to generate an output current based on a second codeword received from the digital signal source. The output current generated by the feed forward circuit is connected to a current supply of the converter circuit. The digital signal source is configured to generate the second codeword based on the first codeword in order to compensate for variations of a supply current of the converter circuit.

Abstract: The disclosure relates to an error-compensated direct digital modulation device, including: a direct digital radio frequency modulator (DDRM), configured to generate a radio frequency (RF) signal based on a modulation of a digital baseband signal; an error estimator configured to determine an error signal resulting from a deviation based on the generated RF signal and a representation of the digital baseband signal; and an error compensator configured to subtract the error signal from the RF signal to provide an error compensated RF signal.

Abstract: A communication apparatus including a first mixer configured to generate an analog output signal (XOUT) from an analog input signal (XIN) using a first mixing signal, a second mixer configured to generate an analog output signal (YOUT) from an analog input signal (YIN) using a second mixing signal, and a local oscillator configured to provide a reference frequency (fREF), where the first mixer is configured to derive a first sampling frequency (fS,1) from the fREF, and where the second mixer is configured to derive a second sampling frequency (fS,2) from the fREF.

Abstract: The disclosure relates to an error-compensated direct digital modulation device, including: a direct digital radio frequency modulator (DDRM), configured to generate a radio frequency (RF) signal based on a modulation of a digital baseband signal; an error estimator configured to determine an error signal resulting from a deviation based on the generated RF signal and a representation of the digital baseband signal; and an error compensator configured to subtract the error signal from the RF signal to provide an error compensated RF signal.

Abstract: A communication apparatus including a first mixer configured to generate an analog output signal (XOUT) from an analog input signal (XIN) using a first mixing signal, a second mixer configured to generate an analog output signal (YOUT) from an analog input signal (YIN) using a second mixing signal, and a local oscillator configured to provide a reference frequency (fREF), where the first mixer is configured to derive a first sampling frequency (fS,1) from the fREF, and where the second mixer is configured to derive a second sampling frequency (fS,2) from the fREF.

Abstract: A mixer for generating an analog output signal XOUT from an analog input signal XIN using a mixing signal having a mixing frequency fMIX, the mixer comprising: a scaler being configured to sample the analog input signal XIN at a plurality of discrete points in time k with a sampling frequency fS to obtain a sampled analog input signal XIN[k] having a continuous signal value, and to generate the analog output signal XOUT having a continuous signal value by scaling the sampled analog input signal XIN[k] on the basis of a plurality of scaling coefficients A[k], wherein the scaling coefficients A[k] are a time-discrete representation of the mixing signal.

Abstract: A circuit is disclosed, including a transistor switch having a first terminal to receive an input voltage, a second terminal to output an output voltage and a gate terminal; a determination circuit, coupled to the first terminal and the second terminal of the transistor switch, to determine a lower or higher voltage between the input voltage and the output voltage; a voltage generator, coupled to the determination circuit, to generate a sum voltage or difference voltage using the lower or higher voltage; and a control circuit, coupled to the voltage generator and the gate terminal of the transistor switch, to apply the sum voltage or difference voltage to the gate terminal of the transistor switch during a first time interval.

Abstract: A circuit is disclosed, including a transistor switch having a first terminal to receive an input voltage, a second terminal to output an output voltage and a gate terminal; a determination circuit, coupled to the first terminal and the second terminal of the transistor switch, to determine a lower or higher voltage between the input voltage and the output voltage; a voltage generator, coupled to the determination circuit, to generate a sum voltage or difference voltage using the lower or higher voltage; and a control circuit, coupled to the voltage generator and the gate terminal of the transistor switch, to apply the sum voltage or difference voltage to the gate terminal of the transistor switch during a first time interval.