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Christian Grewing
Christian Grewing, Taeby SE
| Patent application number | Description | Published |
|---|---|---|
| 20100329372 | Method and Apparatus for Generating a Carrier Frequency Signal - A method and apparatus for generating a carrier frequency signal is disclosed. The method includes generating a first frequency signal; injecting a modulation signal at a first point of the two-point modulation architecture; generating a second frequency signal from the modulation signal; introducing the second frequency signal by mixing the first frequency signal and the second frequency signal to generate a mixed frequency signal and outputting the carrier frequency signal selected from the mixed frequency signal. | 12-30-2010 |
Christian Grewing, Sollentuna SE
| Patent application number | Description | Published |
|---|---|---|
| 20090021311 | VCO Pre-Compensation - A VCO device is described that has pre-compensation. Digitally switchable compensation capacitors are selectively activated to adjust operation of the VCO to mitigate undesirable operational effects. In some example embodiments, the digitally switchable compensation capacitors of the VCO are adjusted to compensate for the effects of activating (from a quiescent state) an output buffer driven by the VCO. | 01-22-2009 |
| 20090103654 | LOW INTERMEDIATE FREQUENCY RECEIVER - One embodiment relates to a low intermediate frequency (IF) receiver. The low-IF receiver includes an analog front end that is configured to receive a modulated IQ data signal and provide an in-phase signal and a quadrature signal, where the in-phase signal is phase shifted by approximately 90° relative to the quadrature signal. The low-IF receiver further includes a digital processing block, and a single path that provides only one of the in-phase signal and the quadrature signal to the digital processing block. Other receivers and methods are also disclosed. | 04-23-2009 |
| 20090190708 | Frequency Synthesis Using Upconversion PLL Processes - Techniques for frequency synthesis using upconversion PLL processes are described herein. | 07-30-2009 |
| 20090206939 | VCO Pre-Compensation - A VCO device is described that has pre-compensation. Digitally switchable compensation capacitors are selectively activated to adjust operation of the VCO to mitigate undesirable operational effects. In some example embodiments, the digitally switchable compensation capacitors of the VCO are adjusted to compensate for the effects of activating (from a quiescent state) an output buffer driven by the VCO. | 08-20-2009 |
| 20100164283 | POWER SUPPLY SCHEME FOR REDUCED POWER COMPENSATION - A power control system is described that reuses current from segregated circuits of the mobile device. In some embodiments, the segregated circuits (or “sections”) can be “stacked” in series (with respect to the power supply) such that power is more efficiently used. The power can be more efficiently used by arranging a first section to reuse current that supplies power to a second section. A power control unit can be used to control regulators. | 07-01-2010 |
Christian Grewing, Sollentuna DE
| Patent application number | Description | Published |
|---|---|---|
| 20080231363 | Temperature compensation of small signal gain of an amplifier stage - The invention relates to an differential amplifier circuit comprising an amplifier stage comprising a first and a second transistor, the gates of which are connected to differential input terminals of the amplifier stage. The differential amplifier further comprises a temperature compensation circuit comprising a third and fourth transistor. The third transistor is connected to the source of the first transistor and the fourth transistor is connected to the source of the second transistor. Further, the temperature compensation circuit comprises a constant current source connected to the respective sources of the third and fourth transistors. Thereby the temperature compensation circuit is arranged to provide a feedback resistance in dependence on the operating temperature so as to compensate for variations of the resistance of the first and second transistors. | 09-25-2008 |
| 20090021074 | Power Supply Scheme for Reduced Power Compensation - A power control system is described that reuses current from segregated circuits of the mobile device. In some embodiments, the segregated circuits (or “sections”) can be “stacked” in series (with respect to the power supply) such that power is more efficiently used. The power can be more efficiently used by arranging a first section to reuse current that supplies power to a second section. A power control unit can be used to control regulators | 01-22-2009 |
Christian Grewing, Stockholm SE
| Patent application number | Description | Published |
|---|---|---|
| 20110187424 | TIME-DOMAIN MEASUREMENT OF PLL BANDWIDTH - A method and a device for determining closed loop bandwidth characteristic of a Phase Locked Loop (PLL) ( | 08-04-2011 |
Christian Grewing, Kista SE
| Patent application number | Description | Published |
|---|---|---|
| 20110298507 | SYSTEM AND METHOD FOR CALIBRATING OUTPUT FREQUENCY IN PHASE LOCKED LOOP - A Digital Calibration System for a Phase Locked Loop includes a Tuning Voltage Controller configured to set the tuning voltage to a value; a Phase Difference Quantizer configured to output a phase difference after comparing a phase of the reference signal with a phase of the feedback signal; a Digital Controller configured to receive the phase difference of the PDQ and control a coarse tuning signal such that an average phase difference of the PDQ is 0; and a Frequency Calibration Logic configured to calibrate the feedback signal in response to the output of the DC. | 12-08-2011 |
Christian Grewing, Duesseldorf DE
| Patent application number | Description | Published |
|---|---|---|
| 20120082186 | ULTRA-WIDEBAND SIGNAL AMPLIFIER - Amplifier for an ultra-wideband (UWB) signal receiver having a signal input ( | 04-05-2012 |