Invention Grant
US08908751B2 Joint adaptive bias point adjustment and digital pre-distortion for power amplifier
有权
功率放大器的联合自适应偏置点调整和数字预失真
- Patent Title: Joint adaptive bias point adjustment and digital pre-distortion for power amplifier
- Patent Title (中): 功率放大器的联合自适应偏置点调整和数字预失真
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Application No.: US13036758Application Date: 2011-02-28
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Publication No.: US08908751B2Publication Date: 2014-12-09
- Inventor: Andrea Camuffo , Chi-Tao Goe , Bernhard Sogl , Sandro Pinarello , Jan-Erik Mueller , Nick Shute
- Applicant: Andrea Camuffo , Chi-Tao Goe , Bernhard Sogl , Sandro Pinarello , Jan-Erik Mueller , Nick Shute
- 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: H04B3/46
- IPC: H04B3/46 ; H03F3/21 ; H03F1/32 ; H03F1/02 ; H03F3/72 ; H03F1/24 ; H04B1/04

Abstract:
One embodiment of the present invention relates to a method and apparatus are provided herein for reducing the power consumption of a transmission chain while maintaining an acceptable figure of merit (e.g., linearity). In one embodiment, an adaptive biasing element is configured to perform adaptive biasing to reduce current consumption of a transmission chain by adjusting the operating point of one or more transmission chain elements (e.g., power amplifier, mixer, etc.). However, since adaptive biasing may reduce the linearity of a transmitted signal, its use is limited by the degradation of figure of merit caused by the introduced non-linearities. Accordingly, a pre-distortion element may be configured to perform adaptive digital pre-distortion (DPD) on a transmission chain input signal to account for non-linearities generated through the adaptive biasing, therefore allowing the adaptive biasing to further reduce the current consumption while maintaining an acceptable figure of merit.
Public/Granted literature
- US20120219048A1 Joint Adaptive Bias Point Adjustment and Digital Pre-Distortion for Power Amplifier Public/Granted day:2012-08-30
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