Method and device for processing the DC offset of a radiofrequency reception subsystem
First Claim
Patent Images
1. 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.
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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.
15 Citations
23 Claims
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1. A method of compensating for direct current (DC) offset in a radio frequency reception device, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for compensating for direct current (DC) offset in radio frequency reception, the device comprising:
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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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A wireless communications device comprising:
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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. - View Dependent Claims (21, 22, 23)
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Specification