Invention Grant
US08554158B2 Current saving by reduced modulation code and selective gating of RF signal
有权
通过降低调制码节省电流，并选择性地选择门控RF信号
- Patent Title: Current saving by reduced modulation code and selective gating of RF signal
- Patent Title (中): 通过降低调制码节省电流，并选择性地选择门控RF信号
-
Application No.: US13248371Application Date: 2011-09-29
-
Publication No.: US08554158B2Publication Date: 2013-10-08
- Inventor: Norbert Van Den Bos , Roeland Heijna , Hendrik Visser
- Applicant: Norbert Van Den Bos , Roeland Heijna , Hendrik Visser
- Applicant Address: CH Plan-les-Ouates
- Assignee: ST-Ericsson SA
- Current Assignee: ST-Ericsson SA
- Current Assignee Address: CH Plan-les-Ouates
- Agency: Coats & Bennett, P.L.L.C.
- Main IPC: H04B1/04
- IPC: H04B1/04 ; H04B1/38
Abstract:
A polar modulation power amplifier employs both thermometer coded and binary coded amplitude modulation data. The thermometer coded amplitude modulation data selectively activates one or more equally weighted power amplifier cells. The binary coded amplitude modulation data selectively activates one or more binary weighted power amplifier cells. When less than full output power is required and the MSBs of the amplitude modulation data are zero (reducing output power at the expense of quantization noise), the power dissipated by RF signal buffers for the unused power amplifier cells corresponding to the MSBs is substantially reduced by gating off the RF signal upstream of the buffers.
Public/Granted literature
- US20120081183A1 Current Saving by Reduced Modulation Code and Selective Gating of RF Signal Public/Granted day:2012-04-05
Information query
