公开(公告)号：US20140184339A1

公开(公告)日：2014-07-03

申请号：US13768713

申请日：2013-02-15

Applicant: BROADCOM CORPORATION

Inventor： Ramon GOMEZ ,  Massmo Brandolini ,  Jiangfeng Wu ,  Kevin Lee Miller ,  Hans Eberhart ,  Tianwei Li

IPC: H03F3/21 ,  H03F3/19 ,  H03M1/66

CPC classification number: H03F3/21 ,  H03F1/0277 ,  H03F1/22 ,  H03F3/19 ,  H03F3/193 ,  H03F3/245 ,  H03F3/45183 ,  H03F3/72 ,  H03F2200/516 ,  H03F2203/45496 ,  H03F2203/45656 ,  H03F2203/45731 ,  H03M1/66

Abstract: Highly power efficient transmitter output stage designs are provided. In an embodiment, the probability density function (PDF) of an input signal is divided into a plurality of regions, and samples of the input signal are processed depending on the region of the PDF within which they fail. The PDF can be divided between an inner region corresponding to samples of the input signal that are within a predetermined amplitude range, and outer regions corresponding to samples of the input signal that are outside of the predetermined amplitude range. Samples of the input signal that fall in the inner region are processed by a class A biased amplifier and samples of the input signal that fall in the outer regions are processed by a class B biased amplifier. Output stage designs according to embodiments can be implemented as power amplifiers or power digital-to-analog converters (DACs).

Abstract translation: 提供高功率发射机输出级设计。 在一个实施例中，输入信号的概率密度函数（PDF）被划分为多个区域，并且根据其中它们失败的PDF的区域来处理输入信号的采样。 PDF可以在对应于在预定幅度范围内的输入信号的样本的内部区域和对应于在预定幅度范围之外的输入信号的采样的外部区域之间划分。 落入内部区域的输入信号的样本由A类偏置放大器处理，落在外部区域的输入信号的采样由B类偏置放大器处理。 根据实施例的输出级设计可以被实现为功率放大器或功率数模转换器（DAC）。