Invention Grant
- Patent Title: Cancellation of RF second-order intermodulation distortion
-
Application No.: US13396012Application Date: 2012-02-14
-
Publication No.: US08744363B2Publication Date: 2014-06-03
- Inventor: Krzysztof Dufrene
- Applicant: Krzysztof Dufrene
- Applicant Address: DE Neubiberg
- Assignee: Intel Mobile Communications GmbH
- Current Assignee: Intel Mobile Communications GmbH
- Current Assignee Address: DE Neubiberg
- Agency: Eschweiler & Associates, LLC
- Main IPC: H04B1/00
- IPC: H04B1/00 ; H04B1/16

Abstract:
The disclosed invention relates to a transceiver system configured to cancel RF second-order intermodulation distortion (IMD2) within a differential reception path. In some embodiments, the transceiver system has one or more common-mode attenuation elements that attenuate common-mode interferer signals within the differential reception path. The common-mode attenuation elements detect a common-mode interferer from one or more nodes within a transceiver system front-end. One or more properties of the detected common-mode interferer are adjusted and then fed into the differential reception path, where the adjusted common-mode signal attenuates the common-mode interferers. In other embodiments, the differential reception path has a tunable amplifying stage. The tunable amplifying stage has first and second amplifier elements that are independently operated to intentionally introduce an operating parameter mismatch between the elements. The intentional mismatch may be tuned to account for different nonlinear responses of the amplifier elements to mitigate IMD2 within the differential reception path.
Public/Granted literature
- US20130208631A1 Cancellation of RF Second-Order Intermodulation Distortion Public/Granted day:2013-08-15
Information query