公开(公告)号：US09379726B1

公开(公告)日：2016-06-28

申请号：US14638532

申请日：2015-03-04

Applicant: Broadcom Corporation

Inventor： Tao Wang ,  Chun-Ying Chen ,  Massimo Brandolini ,  Wei Li

IPC: H03M1/38 ,  H03M1/00 ,  H03M1/46 ,  H03M1/06

CPC classification number: H03M1/125 ,  H03M1/466

Abstract: The present disclosure is directed to a system and method for adjusting a conversion speed of an asynchronous SAR ADC based on a margin of time between when a conversion of a sample of an analog signal completes and a next sample of the analog signal is taken, referred to as a “conversion time margin.” The system and method reduce the conversion speed of an asynchronous SAR ADC when the conversion time margin permits to reduce the amount of power consumed and/or noise produced by the asynchronous SAR ADC.

Abstract translation: 本公开涉及一种用于基于模拟信号的样本的转换完成与模拟信号的下一个采样之间的时间间隔来调整异步SAR ADC的转换速度的系统和方法， 作为“转换时间裕度”。当转换时间裕度允许减少由异步SAR ADC产生的功耗量和/或噪声时，该系统和方法降低了异步SAR ADC的转换速度。

公开(公告)号：US09118367B2

公开(公告)日：2015-08-25

申请号：US13849112

申请日：2013-03-22

Applicant: Broadcom Corporation

Inventor： Ray (Ramon) Gomez ,  Leonard Dauphinee ,  Massimo Brandolini ,  Jianhong Xiao ,  Dongsoo Koh ,  Young Shin ,  Chonghua Zhong ,  Reza Rahman Khan

IPC: H04B1/04 ,  H03M1/66

CPC classification number: H04B1/0475 ,  H03M1/66

Abstract: Embodiments provide transmitter topologies that improve the power efficiency and bandwidth of RF transmitters for high transmission power applications. In an embodiment, the common-emitter/source PA of conventional topologies is replaced with a current-input common-base/gate PA, which is stacked on top on an open-collector/drain current-output transmitter. The common-base/gate PA protects the output of the transmitter from large output voltage swings. The low input impedance of the common-base/gate PA makes the PA less susceptible to frequency roll-off, even in the presence of large parasitic capacitance produced by the transmitter. At the same time, the low input impedance of the common-base/gate PA reduces the voltage swing at the transmitter output and prevents the transmitter output from being compressed or modulated. In an embodiment, the DC output current of the transmitter is reused to bias the PA, which results in power savings compared to conventional transmitter topologies.

Abstract translation: 实施例提供了发射机拓扑，其提高用于高传输功率应用的RF发射机的功率效率和带宽。 在一个实施例中，常规拓扑的共发射极/源极PA被替换为电流输入公共基极/栅极PA，其在集电极开路/漏极电流输出发射器上堆叠在顶部。 公共端/门PA保护发射机的输出免受大的输出电压摆幅。 公共基极/门极PA的低输入阻抗使得即使在发射机产生大的寄生电容的情况下，PA也不易于频率滚降。 同时，公共基极/门极PA的低输入阻抗降低了发射机输出端的电压摆幅，并防止发射机输出被压缩或调制。 在一个实施例中，与常规发射机拓扑相比，发射机的DC输出电流被重新用于偏置PA，这导致功率节省。

公开(公告)号：US08912937B2

公开(公告)日：2014-12-16

申请号：US13768713

申请日：2013-02-15

Applicant: Broadcom Corporation

Inventor： Ramon Gomez ,  Massimo Brandolini ,  Jiangfeng Wu ,  Kevin Lee Miller ,  Hans Eberhart ,  Tianwei Li

IPC: H03M1/66 ,  H03F3/19 ,  H03F3/21

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 fall. 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，并且根据它们所在的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：US09019029B2

公开(公告)日：2015-04-28

申请号：US13831312

申请日：2013-03-14

Applicant: Broadcom Corporation

Inventor： Shriram Kalusalingam ,  Massimo Brandolini

IPC: H03B5/12 ,  H03L7/16 ,  H03F1/00 ,  H03H7/01

CPC classification number: H03L7/16 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1265 ,  H03F1/00 ,  H03H7/0153 ,  H03J2200/10 ,  H03L2207/50

Abstract: Systems and methods for switching impedance are provided. In some aspects, a system includes first and second impedance elements and an impedance switch module, which includes a third impedance element coupled between the first and second impedance elements and a switch parallel to the third impedance element. The switch is coupled between the first and second impedance elements, and is configured to switch between an open configuration and a closed configuration. An electrical path is completed between the first impedance element and the second impedance element via the first switch in the closed configuration. The electrical path is not completed in the open configuration. A total impedance of the first impedance element, the second impedance element, and the impedance switch module is varied based on the switching between the open configuration and the closed configuration.

Abstract translation: 提供了开关阻抗的系统和方法。 在一些方面，系统包括第一和第二阻抗元件和阻抗开关模块，阻抗开关模块包括耦合在第一和第二阻抗元件之间的第三阻抗元件和平行于第三阻抗元件的开关。 开关耦合在第一和第二阻抗元件之间，并且被配置为在打开配置和关闭配置之间切换。 在第一阻抗元件和第二阻抗元件之间经由闭合配置中的第一开关完成电路径。 电气路径在打开配置中未完成。 第一阻抗元件，第二阻抗元件和阻抗开关模块的总阻抗基于打开配置和闭合配置之间的切换而变化。

公开(公告)号：US08878707B1

公开(公告)日：2014-11-04

申请号：US13967819

申请日：2013-08-15

Applicant: Broadcom Corporation

Inventor： Tao Wang ,  Chun-Ying Chen ,  Massimo Brandolini ,  Wei-Te Chou

IPC: H03M1/00 ,  H03M1/12

CPC classification number: H03M1/0836 ,  H03M1/1245 ,  H03M1/164

Abstract: A system includes a first storage element to store an input signal for a first sampling lane for a SHA-less stage. A first switch is connected with the first storage element, the first switch to control when the first storage element stores the input signal for sampling on the first sampling lane. A second switch is connected in series with the first switch, the second switch to control an instance for sampling the input signal stored on the first storage element for the first sampling lane.

Abstract translation: 系统包括第一存储元件，用于存储用于无SHA阶段的第一采样通道的输入信号。 第一开关与第一存储元件连接，第一开关用于控制第一存储元件何时存储用于在第一采样通道上采样的输入信号。 第二开关与第一开关串联连接，第二开关用于控制用于对存储在第一采样通道的第一存储元件上的输入信号进行采样的实例。

公开(公告)号：US20130235953A1

公开(公告)日：2013-09-12

申请号：US13849112

申请日：2013-03-22

Applicant: BROADCOM CORPORATION

Inventor： Ray (Ramon) GOMEZ ,  Leonard Dauphinee ,  Massimo Brandolini ,  Jianhong Xiao ,  Dongsoo Koh ,  Young Shin ,  Chonghua Zhong ,  Reza Rahman Khan

IPC: H04B1/04 ,  H03M1/66

CPC classification number: H04B1/0475 ,  H03M1/66

Abstract: Embodiments provide transmitter topologies that improve the power efficiency and bandwidth of RF transmitters for high transmission power applications. In an embodiment, the common-emitter/source PA of conventional topologies is replaced with a current-input common-base/gate PA, which is stacked on top on an open-collector/drain current-output transmitter. The common-base/gate PA protects the output of the transmitter from large output voltage swings. The low input impedance of the common-base/gate PA makes the PA less susceptible to frequency roll-off, even in the presence of large parasitic capacitance produced by the transmitter. At the same time, the low input impedance of the common-base/gate PA reduces the voltage swing at the transmitter output and prevents the transmitter output from being compressed or modulated, In an embodiment, the DC output current of the transmitter is reused to bias the PA, which results in power savings compared to conventional transmitter topologies.

Abstract translation: 实施例提供了发射机拓扑，其提高用于高传输功率应用的RF发射机的功率效率和带宽。 在一个实施例中，常规拓扑的共发射极/源极PA被替换为电流输入公共基极/栅极PA，其在集电极开路/漏极电流输出发射器上堆叠在顶部。 公共端/门PA保护发射机的输出免受大的输出电压摆幅。 公共基极/门极PA的低输入阻抗使得即使在发射机产生大的寄生电容的情况下，PA也不易于频率滚降。 同时，公共基极/门极PA的低输入阻抗降低了发射机输出端的电压摆幅，并防止发射机输出被压缩或调制。在一个实施例中，发射机的直流输出电流被重新使用 偏置PA，与常规发射机拓扑结构相比，导致功率节省。