公开(公告)号：US20150071132A1

公开(公告)日：2015-03-12

申请号：US14546746

申请日：2014-11-18

Applicant: Broadcom Corporation

Inventor： Mohyee MIKHEMAR ,  Hooman Darabi

IPC: H04L5/14 ,  H04B1/04

CPC classification number: H04L5/143 ,  H04B1/04 ,  H04B1/525 ,  H04B2001/0416

Abstract: Embodiments of a four-port isolation module are presented herein. In an embodiment, the isolation module includes a step-up autotransformer comprising a first and second winding that are electrically coupled in series at a center node. The first port of the isolation module is configured to couple an antenna to a first end node of the series coupled windings. The second port of the isolation module is configured to couple a balancing network to a second end node of the series coupled windings. The third port is configured to couple a transmit path to the center node. The fourth port is configured to couple a differential receive path across the first end node and the second end node. The isolation module effectively isolates the third port from the fourth port to prevent strong outbound signals received at the third port from saturating an LNA coupled to the fourth port.

Abstract translation: 本文给出了四端口隔离模块的实施例。 在一个实施例中，隔离模块包括升压自耦变压器，其包括在中心节点电耦合的第一和第二绕组。 隔离模块的第一端口被配置为将天线耦合到串联耦合绕组的第一端节点。 隔离模块的第二端口被配置为将平衡网络耦合到串联耦合绕组的第二端节点。 第三端口被配置为将发送路径耦合到中心节点。 第四端口被配置为耦合跨越第一端节点和第二端节点的差分接收路径。 隔离模块有效地将第三端口与第四端口隔离，以防止在第三端口处接收的强大的出站信号使连接到第四端口的LNA饱和。

公开(公告)号：US08977222B2

公开(公告)日：2015-03-10

申请号：US13681316

申请日：2012-11-19

Applicant: Broadcom Corporation

Inventor： Mohyee Mikhemar ,  David Murphy ,  Hooman Darabi

IPC: H04B17/00 ,  H04B1/10

CPC classification number: H04B17/0055 ,  H04B17/11 ,  H04B17/345

Abstract: A circuit for measurement of a phase noise of an oscillator may include the oscillator to generate a first signal having the same oscillation frequency as an instantaneous oscillation frequency of the oscillator. The circuit may include a first circuit that is configured to generate a second signal from the first signal. An instantaneous amplitude of the second signal may be related to the oscillation frequency of the first signal. A second circuit may be configured to integrate the second signal to generate a third signal. The third signal can be a measure of the phase noise of the oscillator. The third signal can be used to cancel some or all of the phase noise of the oscillator.

Abstract translation: 用于测量振荡器的相位噪声的电路可以包括振荡器以产生具有与振荡器的瞬时振荡频率相同的振荡频率的第一信号。 电路可以包括被配置为从第一信号产生第二信号的第一电路。 第二信号的瞬时振幅可以与第一信号的振荡频率有关。 第二电路可以被配置为对第二信号进行积分以产生第三信号。 第三个信号可以是振荡器的相位噪声的量度。 第三个信号可用于消除振荡器的一些或全部相位噪声。

公开(公告)号：US08913968B2

公开(公告)日：2014-12-16

申请号：US13672450

申请日：2012-11-08

Applicant: Broadcom Corporation

Inventor： Ahmad Mirzaei ,  Hooman Darabi

IPC: H04B1/04 ,  H03B19/00

CPC classification number: H04B1/04 ,  H03B19/00 ,  H03D7/1433 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/1491 ,  H03D7/165 ,  H04B1/0475

Abstract: A transmitter includes a power amplifier driver to amplify a communication signal and a mixer connected with the power amplifier driver, the mixer to output the communication signal to the power amplifier driver. A capacitor and an inductor connect with the mixer and the power amplifier driver. The capacitor and the inductor create a resonant frequency to attenuate frequency components around a determined order of a local oscillator signal.

Abstract translation: 发射机包括用于放大通信信号的功率放大器驱动器和与功率放大器驱动器连接的混频器，混频器将通信信号输出到功率放大器驱动器。 电容器和电感器与混频器和功率放大器驱动器连接。 电容器和电感器产生谐振频率以衰减围绕本地振荡器信号的确定阶数的频率分量。

公开(公告)号：US08885690B2

公开(公告)日：2014-11-11

申请号：US13898287

申请日：2013-05-20

Applicant: Broadcom Corporation

Inventor： Alireza Zolfaghari ,  Henrik Tholstrup Jensen ,  Hooman Darabi

IPC: H04L25/00 ,  H04K1/02 ,  H03K19/20 ,  H04L27/00 ,  H04B1/40 ,  H04B1/04

CPC classification number: H04B1/406 ,  H03F3/24 ,  H04B2001/0408 ,  H04L27/0008

Abstract: Various embodiments are disclosed relating to power control techniques for wireless transmitters. In an example embodiment, an apparatus is provided that may include a digital-to-analog converter (DAC) adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode.

Abstract translation: 公开了关于无线发射机的功率控制技术的各种实施例。 在一个示例性实施例中，提供了一种可以包括数模转换器（DAC）的装置，其适于在第一传输模式期间将数字幅度信号转换为模拟幅度信号，并且适于将数字功率电平信号转换为 在第二传输模式期间的模拟功率电平信号。

公开(公告)号：US20140146717A1

公开(公告)日：2014-05-29

申请号：US13688007

申请日：2012-11-28

Applicant: BROADCOM CORPORATION

Inventor： Mohyee Mikhemar ,  Hooman Darabi

IPC: H04L5/14

CPC classification number: H04L5/1461 ,  H04B1/525

Abstract: A circuit for a large-signal electrical balance duplexer (EBD) may include a circulator that can be configured to couple an output node of a transmit (TX) path to an antenna. An EBD circuit may be coupled to the circulator, at a first port of the EBD circuit. The EBD circuit may be configured to isolate the circulator from one or more input nodes of a receive (RX) path. An attenuator may be coupled between the output node of the TX path and a second port of the EBD circuit. The attenuator may be configured to provide an attenuated signal to the EBD circuit.

Abstract translation: 用于大信号电平衡双工器（EBD）的电路可以包括可被配置为将发射（TX）路径的输出节点耦合到天线的环行器。 EBD电路可以在EBD电路的第一端口耦合到环行器。 EBD电路可以被配置为将循环器与接收（RX）路径的一个或多个输入节点隔离。 衰减器可以耦合在TX路径的输出节点和EBD电路的第二端口之间。 衰减器可以被配置为向EBD电路提供衰减信号。

公开(公告)号：US20140141740A1

公开(公告)日：2014-05-22

申请号：US13681333

申请日：2012-11-19

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  David Murphy ,  Hooman Darabi

IPC: H04B1/10

CPC classification number: H04B1/1027

Abstract: A method for reciprocal-mixing noise cancellation may include receiving a baseband signal down-converted to baseband using a local oscillator (LO). The baseband signal may comprise a wanted signal and a reciprocal mixing noise, which at least partially overlaps the wanted signal and is due to mixing of a blocker signal with a phase noise of the LO. Blocker recovery may be performed on the baseband signal and a blocker estimate signal may be generated from the baseband signal. The phase noise of the LO may be measured and used in generating a phase noise measurement signal. The blocker estimate signal and the phase noise measurement signal may be processed to generate a reconstructed noise signal that may comprise the overlapping reciprocal mixing noise. The reconstructed noise signal may be subtracted from the baseband signal to provide the wanted signal free from to the reciprocal mixing noise.

Abstract translation: 用于相互混合噪声消除的方法可以包括使用本地振荡器（LO）接收被下变频到基带的基带信号。 基带信号可以包括有用信号和互易混合噪声，其与有用信号至少部分重叠，并且是由于阻塞信号与LO的相位噪声的混合引起的。 可以对基带信号执行阻塞恢复，并且可以从基带信号生成阻塞估计信号。 可以测量LO的相位噪声并用于产生相位噪声测量信号。 阻塞估计信号和相位噪声测量信号可被处理以产生重构的噪声信号，其可以包括重叠的互倒混合噪声。 可以从基带信号中减去重建的噪声信号，以提供不需要的混合噪声的有用信号。

公开(公告)号：US08618859B1

公开(公告)日：2013-12-31

申请号：US13666881

申请日：2012-11-01

Applicant: Broadcom Corporation

Inventor： David Murphy ,  Hooman Darabi ,  Hao Xu

IPC: H03K3/00

CPC classification number: H03K5/15013

Abstract: A method for generation of high frequency, non-overlapping clocks may include receiving input clock signals at a clock input node of a circuit. Multiple feedback signals may be received at a number of input feedback nodes of the circuit. At a startup node, a startup signal of the circuit may be received, and, in response to receiving the startup signal, an output clock may be generated at a predefined portion of at least one of the received input clock signals. A stable high frequency output clock may be generated at an output stage by utilizing the feedback signals received by the input feedback nodes.

Abstract translation: 用于产生高频非重叠时钟的方法可以包括在电路的时钟输入节点处接收输入时钟信号。 可以在电路的多个输入反馈节点处接收多个反馈信号。 在启动节点处，可以接收电路的启动信号，并且响应于接收到启动信号，可以在所接收的输入时钟信号中的至少一个的预定义部分处生成输出时钟。 可以通过利用由输入反馈节点接收的反馈信号在输出级产生稳定的高频输出时钟。

公开(公告)号：US20130331049A1

公开(公告)日：2013-12-12

申请号：US13963859

申请日：2013-08-09

Applicant: Broadcom Corporation

Inventor： Ahmad Mirzaei ,  Hooman Darabi

IPC: H03G3/30

CPC classification number: H03G3/3042 ,  H03F1/02 ,  H03F3/193 ,  H03F3/24 ,  H03F3/45179 ,  H03F3/72 ,  H03F2200/111 ,  H03F2203/45384 ,  H03F2203/45394 ,  H03F2203/45731 ,  H03F2203/7209 ,  H04B1/0057 ,  H04B1/006 ,  H04B1/02 ,  H04B1/0458 ,  H04B2001/045

Abstract: A transmitter includes a power amplifier driver connected with a first transformer and a second transformer. The first transformer is configured for a first band mode and the second transformer is configured for a second band mode. The power amplifier driver drives both the first transformer and the second transformer.

Abstract translation: 发射机包括与第一变压器和第二变压器连接的功率放大器驱动器。 第一变压器被配置用于第一频带模式，并且第二变压器被配置用于第二频带模式。 功率放大器驱动器驱动第一变压器和第二变压器。

公开(公告)号：US20130102360A1

公开(公告)日：2013-04-25

申请号：US13690763

申请日：2012-11-30

Applicant: Broadcom Corporation

Inventor： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Hooman Darabi ,  Frederic Christian Marc Hayem ,  Claude G. Hayek ,  Vafa James Rakshani ,  Nelson R. Sollenberger ,  Yossi Cohen

IPC: H04M1/253

CPC classification number: H04W64/00 ,  H04B1/406 ,  H04M1/253

Abstract: A Voice-Data-RF IC includes a baseband processing module, an RF section, and an interface module. The baseband processing module converts an outbound voice signal into an outbound voice symbol stream, converts an inbound voice symbol stream into an inbound voice signal, converts outbound data into an outbound data symbol stream, and converts an inbound data symbol stream into inbound data. The interface module provides selective coupling between the baseband processing module, the RF section, and with off-chip circuits.

Abstract translation: 语音数据RF IC包括基带处理模块，RF部分和接口模块。 基带处理模块将出站语音信号转换为出站语音符号流，将入站语音符号流转换为入站语音信号，将出站数据转换为出站数据符号流，并将入站数据符号流转换为入站数据。 接口模块提供基带处理模块，RF部分和片外电路之间的选择性耦合。

公开(公告)号：US09595985B1

公开(公告)日：2017-03-14

申请号：US14882836

申请日：2015-10-14

Applicant: Broadcom Corporation

Inventor： David Murphy ,  Hao Wu ,  Hooman Darabi

IPC: H04B1/10 ,  H04B15/00 ,  H04B1/12

CPC classification number: H04B1/10 ,  H04B1/12 ,  H04B1/18 ,  H04B15/00

Abstract: Recently proposed noise-cancelling receivers report a best case trade-off between noise figure and linearity for a matched wideband receiver. These receivers are further improved using a passive front-end gain. The front-end gain reduces the power requirements of the radio frequency transconductance stage, and potentially other stages where, e.g., smaller mixer switches may be employed.

Abstract translation: 最近提出的噪声消除接收机报告了匹配宽带接收机的噪声系数和线性度之间的最佳情况权衡。 使用被动前端增益进一步改善这些接收机。 前端增益降低了射频跨导级的功率需求，以及潜在的其他阶段，其中可以采用例如较小的混频器开关。