Method and device for processing the DC offset of a radiofrequency reception subsystem
AssigneesSTMicroelectronics S.r.l., STMicroelectronics (Grenoble) SAS
InventorsAntoine Hue, Gabriel Della-Monica, Florent Sibille
Life of this patent
Estimating the term…
Abstract
A method may compensate for direct current (DC) offset in a radio frequency reception device. The method may include partitioning an analog portion of the reception device into a plurality of zones, for each zone, calibrating initial DC offset compensation to be applied within an operating range of a respective zone, the operating range of the other zones being limited to a threshold operating range, and determining DC offset compensation to be applied to the reception device throughout the operating range based on the basic DC offset compensations.
Claims23
A method of compensating for direct current (DC) offset in a radio frequency reception device, the method comprising:
- partitioning an analog portion of the reception device into a plurality of zones;
- for each zone, calibrating an initial DC offset compensation to be applied within an operating range of a respective zone, the operating range of the other zones being limited to a threshold operating range;
- and
- determining an actual DC offset compensation to be applied to the plurality of zones based on the initial DC offset compensations.
A device for compensating for direct current (DC) offset in radio frequency reception, the device comprising:
- a reception module including an analog portion being partitioned into a plurality of zones;
- a calibration module configured to perform a calibration of an initial DC offset compensation applied to a respective zone in an operating range;
- a controller configured to limit the operating range of the respective zone to a threshold operating range;
- a monitoring module configured to activate said calibration module and said controller for the other zones;
- and
- a determination module configured to determine an actual DC offset compensation applied to the plurality of zones based on the initial DC offset compensations.
A wireless communications device comprising:
- an antenna configured to receive a radio frequency (RF) signal;
- and
- a device cooperating with said antenna and configured to compensate for direct current (DC) offset in the received RF signal and comprising
- a reception module including an analog portion being partitioned into a plurality of zones, and
- a controller configured to
- perform a calibration of an initial DC offset compensation in an operating range of a respective zone,
- limit the operating range of the respective zone to a threshold operating range, and
- determine an actual DC offset compensation for the plurality of zones based upon the initial DC offset compensations.
Dependencies are inferred from the claim text.