The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2013
Filed:
Aug. 11, 2009
Sudhakar Kalakota, Santa Clara, CA (US);
Mingdeng Chen, Palo Alto, CA (US);
Sudhakar Kalakota, Santa Clara, CA (US);
Mingdeng Chen, Palo Alto, CA (US);
QUALCOMM, Incorporated, San Diego, CA (US);
Abstract
Exemplary techniques for DC offset calibration for complex filters are disclosed. A complex filter is provided having a first calibration path circuit and a second calibration path circuit, each including a first and a second set of switches, respectively. The first set of switches is enabled during calibration mode and the second set of switches is enabled during normal operation mode such that the network characteristics of each calibration path circuit are substantially the same during both modes of operation. In one embodiment, the complex filter is a low pass filter.
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