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）。

公开(公告)号：US20130314261A1

公开(公告)日：2013-11-28

申请号：US13867580

申请日：2013-04-22

Applicant: Broadcom Corporation

Inventor： Ramon GOMEZ ,  Loke TAN ,  Bruce CURRIVAN ,  Steven JAFFE ,  Thomas KOLZE ,  Lin HE

IPC: H03M1/06

CPC classification number: H03M1/06 ,  H03M1/00 ,  H03M1/0695 ,  H03M1/1061 ,  H03M1/12 ,  H03M1/1215

Abstract: A method and apparatus is disclosed to compensate for impairments within a data converter such that its output is a more accurate representation of its input. The data converter includes a main data converter, a reference data converter, and a correction module. The main data converter may be characterized as having the impairments. As a result, the output of the main data converter is not the most accurate representation of its input. The reference data converter is designed such that the impairments are not present. The correction module estimates the impairments present within the main data converter using its output and the reference data converter to generate corrections coefficients. The correction module adjusts the output of the main data converter using the corrections coefficients to improve the performance of the data converter.

Abstract translation: 公开了一种用于补偿数据转换器内的损伤的方法和装置，使得其输出是其输入的更准确的表示。 数据转换器包括主数据转换器，参考数据转换器和校正模块。 主数据转换器可以被表征为具有损伤。 因此，主数据转换器的输出不是其输入的最准确的表示。 参考数据转换器被设计成不存在损伤。 校正模块使用其输出和参考数据转换器来估计存在于主数据转换器内的损伤以产生校正系数。 校正模块使用校正系数调整主数据转换器的输出，以提高数据转换器的性能。

公开(公告)号：US20140233679A1

公开(公告)日：2014-08-21

申请号：US13770683

申请日：2013-02-19

Applicant: BROADCOM CORPORATION

Inventor： Ravikiran RAJAGOPAL ,  Jeffrey Scott PUTNAM ,  Ramon GOMEZ

IPC: H04L27/26

CPC classification number: H04L27/2649 ,  H03M1/002 ,  H03M1/12 ,  H03M1/18 ,  H04L27/2655 ,  H04L27/2684 ,  H04L27/2689 ,  H04W52/0216 ,  H04W52/0235 ,  H04W52/0274 ,  Y02D70/122 ,  Y02D70/168

Abstract: An auxiliary reduced power analog-to-digital converter (ADC) is provided for use during sleep periods of a receiver. The auxiliary ADC has a reduced dynamic range but sufficient accuracy to allow demodulation of signaling information contained in an input signal and to update control parameters used for synchronization and channel estimation. As such, a main higher power, higher dynamic range ADC can be turned off during sleep periods, reducing receiver power consumption. The main ADC is turned on at the end of a sleep period, and the receiver can be ready for receiving data immediately using the main ADC because the control parameters are maintained up to date during the sleep period using the auxiliary ADC.

Abstract translation: 提供辅助降低功率模数转换器（ADC）以在接收机的睡眠期间使用。 辅助ADC具有减小的动态范围，但具有足够的精度，以允许解调包含在输入信号中的信令信息并且更新用于同步和信道估计的控制参数。 因此，主要的高功率，较高动态范围的ADC可以在休眠期间关闭，从而降低了接收机的功耗。 主ADC在睡眠周期结束时打开，接收器可以准备好立即使用主ADC接收数据，因为在使用辅助ADC的睡眠期间，控制参数保持最新。