发明申请
US20120219048A1 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
- 专利标题: Joint Adaptive Bias Point Adjustment and Digital Pre-Distortion for Power Amplifier
- 专利标题(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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申请号: US13036758申请日: 2011-02-28
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公开(公告)号: US20120219048A1公开(公告)日: 2012-08-30
- 发明人: Andrea Camuffo , Chi-Tao Goe , Bernhard Sogl , Sandro Pinarello , Jan-Erik Mueller , Nick Shute
- 申请人: Andrea Camuffo , Chi-Tao Goe , Bernhard Sogl , Sandro Pinarello , Jan-Erik Mueller , Nick Shute
- 申请人地址: DE Neubiberg
- 专利权人: Infineon Technologies AG
- 当前专利权人: Infineon Technologies AG
- 当前专利权人地址: DE Neubiberg
- 主分类号: H04L25/03
- IPC分类号: H04L25/03 ; H04B17/00
摘要:
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.
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