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    ELECTRICAL BALANCE DUPLEXER FOR CO-EXISTENCE AND CONCURRENT OPERATION OF MORE THAN ONE WIRELESS TRANSCEIVERS
    1.
    发明申请
    ELECTRICAL BALANCE DUPLEXER FOR CO-EXISTENCE AND CONCURRENT OPERATION OF MORE THAN ONE WIRELESS TRANSCEIVERS 有权
    用于多于一个无线收发器的并存和并发操作的电气平衡双工器

    公开(公告)号：US20140146718A1

    公开(公告)日：2014-05-29

    申请号：US13688053

    申请日：2012-11-28

    Applicant: BROADCOM CORPORATION

    Inventor： Mohyee MIKHEMAR ,  Hooman DARABI

    IPC: H04B1/44 ,  H04L5/14

    CPC classification number: H04L5/14 ,  H03H7/463 ,  H04B1/52

    Abstract: A circuit for a common electrical balance duplexer (EBD) of a multi-path transceiver may include an EBD circuit. The EBD circuit may be coupled to output nodes of two or more transmit (TX) paths, one or more antennas, and input nodes of two or more receive (RX) paths. The EBD circuit may be configured to isolate the TX paths from the RX paths, and to provide low-loss signal paths between the output nodes of the transmit (TX) paths and one or more antennas. One or more balancing networks may be coupled to the EBD circuit to provide one or more impedances, each matching a corresponding impedance associated with one of the antennas. The output nodes of the transmit (TX) paths may include output nodes of a first and a second power amplifier (PA). The first and the second PA may share a matching transformer that is merged with the EBD circuit.

    Abstract translation: 用于多径收发器的公共电气平衡双工器（EBD）的电路可以包括EBD电路。 EBD电路可以耦合到两个或更多个发射（TX）路径，一个或多个天线以及两个或更多个接收（RX）路径的输入节点的输出节点。 EBD电路可以被配置为将TX路径与RX路径隔离，并且在发射（TX）路径的输出节点与一个或多个天线之间提供低损耗信号路径。 一个或多个平衡网络可以耦合到EBD电路以提供一个或多个阻抗，每个阻抗匹配与天线之一相关联的相应阻抗。 发射（TX）路径的输出节点可以包括第一和第二功率放大器（PA）的输出节点。 第一和第二PA可以共享与EBD电路合并的匹配变压器。

    LOW-LOSS ELECTRICAL BALANCE DUPLEXER WITH NOISE CANCELLATION
    2.
    发明申请
    LOW-LOSS ELECTRICAL BALANCE DUPLEXER WITH NOISE CANCELLATION 有权
    具有噪声消除的低电平平衡双工器

    公开(公告)号：US20150171975A1

    公开(公告)日：2015-06-18

    申请号：US14631714

    申请日：2015-02-25

    Applicant: BROADCOM CORPORATION

    Inventor： Mohyee MIKHEMAR ,  Hooman DARABI

    IPC: H04B15/00 ,  H04B1/12 ,  H04L5/14

    CPC classification number: H04B15/00 ,  H04B1/123 ,  H04B1/48 ,  H04B1/525 ,  H04L5/14

    Abstract: A circuit for a low-loss duplexer with noise cancellation in a receive (RX) path of a transceiver includes a duplexer, a balancing network, and a noise cancellation circuit. The duplexer circuit is coupled to an antenna of the transceiver. The balancing network is coupled to the duplexer and provides an impedance matching an impedance associated with the antenna. The noise cancellation circuit senses a noise signal generated by the balancing network and uses the sensed noise signal to improve a signal-to-noise ratio (SNR) of the RX path.

    Abstract translation: 在收发器的接收（RX）路径中具有噪声消除的低损耗双工器的电路包括双工器，平衡网络和噪声消除电路。 双工器电路耦合到收发器的天线。 平衡网络耦合到双工器，并提供与天线相关联的阻抗匹配的阻抗。 噪声消除电路感测由平衡网络产生的噪声信号，并使用所感测的噪声信号来提高RX路径的信噪比（SNR）。

    RECEIVER WITH VARIABLE GAIN CONTROL TRANSIMPEDANCE AMPLIFIER
    3.
    发明申请
    RECEIVER WITH VARIABLE GAIN CONTROL TRANSIMPEDANCE AMPLIFIER 审中-公开
    接收器具有可变增益控制转移放大器

    公开(公告)号：US20150326185A1

    公开(公告)日：2015-11-12

    申请号：US14807429

    申请日：2015-07-23

    Applicant: Broadcom Corporation

    Inventor： Mohyee MIKHEMAR ,  Amir HADJl-ABDOLHAMID ,  Hooman DARABI

    IPC: H03F1/02 ,  H03G1/00 ,  H03F3/19 ,  H03F3/45 ,  H04B1/12 ,  H04B1/16

    CPC classification number: H03H11/1217 ,  H03F1/0205 ,  H03F1/086 ,  H03F3/19 ,  H03F3/45076 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/91 ,  H03F2203/45332 ,  H03F2203/45336 ,  H03G1/0005 ,  H03G1/0029 ,  H03G3/3068 ,  H03G3/32 ,  H03H11/1252 ,  H03H11/1256 ,  H03H11/1291 ,  H03H2210/025 ,  H04B1/123 ,  H04B1/16 ,  H04L25/06

    Abstract: According to one embodiment, a compact low-power receiver comprises first and second analog circuits connected by a digitally controlled interface circuit. The first analog circuit has a first direct-current (DC) offset and a first common mode voltage at an output, and the second analog circuit has a second DC offset and a second common mode voltage at an input. The digitally controlled interface circuit connects the output to the input, and is configured to match the first and second DC offsets and to match the first and second common mode voltages. In one embodiment, the first analog circuit is a variable gain control transimpedance amplifier (TIA) implemented using a current mode buffer, the second analog circuit is a second-order adjustable low-pass filter, whereby a three-pole adjustable low-pass filter in the compact low-power receiver is effectively produced.

    Abstract translation: 根据一个实施例，紧凑型低功率接收机包括由数字控制接口电路连接的第一和第二模拟电路。 第一模拟电路在输出处具有第一直流（DC）偏移和第一共模电压，并且第二模拟电路在输入端具有第二直流偏移和第二共模电压。 数字控制接口电路将输出连接到输入，并且被配置为匹配第一和第二DC偏移并且匹配第一和第二共模电压。 在一个实施例中，第一模拟电路是使用电流模式缓冲器实现的可变增益控制跨阻抗放大器（TIA），第二模拟电路是二阶可调低通滤波器，由此三极可调低通滤波器 在紧凑型低功率接收机中有效生产。

    RECIPROCAL MIXING NOISE CANCELLATION IN THE PRESENCE OF A MODULATED BLOCKER
    4.
    发明申请
    RECIPROCAL MIXING NOISE CANCELLATION IN THE PRESENCE OF A MODULATED BLOCKER 有权
    混合阻塞器存在的混合噪声消除

    公开(公告)号：US20140235191A1

    公开(公告)日：2014-08-21

    申请号：US13897306

    申请日：2013-05-17

    Applicant: Broadcom Corporation

    Inventor： Mohyee MIKHEMAR ,  David Murphy ,  Hooman Darabi

    IPC: H04B1/10

    CPC classification number: H04B15/06 ,  H04B1/109

    Abstract: A method for reciprocal-mixing noise cancellation may include receiving, from a first mixer, a first signal comprising a wanted signal at a first frequency and a modulated signal at a second frequency. The modulated signal may be a product of a reciprocal-mixing of an unwanted signal with a phase noise. One or more portions of the modulated signal may overlap the wanted signal, adding a reciprocal-mixing noise to the wanted signal. A second signal may be generated by mixing, at a second mixer, the first signal with a third signal, which is at a third frequency related to a blocker offset frequency. A gain may be applied to the second signal to generate an amplified second signal that may be subtracted from the first signal to generate a fourth signal. The fourth signal may be filtered to generate the wanted signal at the first frequency without the reciprocal-mixing noise.

    Abstract translation: 用于相互混合噪声消除的方法可以包括从第一混频器接收包括第一频率的有用信号的第一信号和以第二频率调制的信号。 调制信号可以是不想要的信号与相位噪声的互相混合的乘积。 调制信号的一个或多个部分可能与有用信号重叠，向有用信号添加互易混合噪声。 第二信号可以通过在第二混合器处将第一信号与第三信号混合来产生，第三信号是与阻塞偏移频率相关的第三频率。 可以将增益应用于第二信号以产生可以从第一信号中减去的放大的第二信号，以产生第四信号。 可以对第四信号进行滤波，以在第一频率下产生有用信号，而不会产生相互混合噪声。

    LOW-LOSS TX-TO-RX ISOLATION USING ELECTRICAL BALANCE DUPLEXER WITH NOISE CANCELLATION
    5.
    发明申请
    LOW-LOSS TX-TO-RX ISOLATION USING ELECTRICAL BALANCE DUPLEXER WITH NOISE CANCELLATION 有权
    低噪声TX-TO-RX隔离，使用电平衡双工器与噪声消除

    公开(公告)号：US20140169231A1

    公开(公告)日：2014-06-19

    申请号：US13719055

    申请日：2012-12-18

    Applicant: BROADCOM CORPORATION

    Inventor： Mohyee MIKHEMAR ,  Hooman DARABI

    IPC: H04L5/14

    CPC classification number: H04B15/00 ,  H04B1/123 ,  H04B1/48 ,  H04B1/525 ,  H04L5/14

    Abstract: A circuit for a low-loss electrical balance duplexer (EBD) with noise cancellation may include an EBD circuit. The EBD circuit may be coupled to one or more output nodes of a transmit (TX) path, an antenna, and a one or more input nodes of a receive (RX) path. The EBD circuit may be configured to isolate the TX path from the RX path, and to provide low-loss signal paths between the one or more output nodes of the TX path and the antenna. A balancing network may be coupled to the EBD circuit and configured to provide an impedance that matches an impedance associated with the antenna. A noise cancellation circuit may be configured to sense a noise signal generated by the balancing network, and to use the sensed noise signal to improve a signal-to-noise ratio (SNR) of the RX path.

    Abstract translation: 用于具有噪声消除的低损耗电气平衡双工器（EBD）的电路可以包括EBD电路。 EBD电路可以耦合到发射（TX）路径，天线和接收（RX）路径的一个或多个输入节点的一个或多个输出节点。 EBD电路可以被配置为将TX路径与RX路径隔离，并且在TX路径的一个或多个输出节点和天线之间提供低损耗信号路径。 平衡网络可以耦合到EBD电路并且被配置为提供匹配与天线相关联的阻抗的阻抗。 噪声消除电路可以被配置为感测由平衡网络产生的噪声信号，并且使用所感测的噪声信号来提高RX路径的信噪比（SNR）。

    METHOD AND SYSTEM FOR RECIPROCAL MIXING CANCELLATION OF WIDEBAND MODULATED BLOCKERS
    6.
    发明申请
    METHOD AND SYSTEM FOR RECIPROCAL MIXING CANCELLATION OF WIDEBAND MODULATED BLOCKERS 有权
    宽带调制阻塞器的混合混合方法和系统

    公开(公告)号：US20140141741A1

    公开(公告)日：2014-05-22

    申请号：US13683896

    申请日：2012-11-21

    Applicant: BROADCOM CORPORATION

    Inventor： Mohyee MIKHEMAR ,  David Murphy ,  Hooman Darabi

    IPC: H04B1/12

    CPC classification number: H04B1/12 ,  H04B1/109

    Abstract: A method for reciprocal-mixing noise cancellation may include receiving, from a first mixer, a first signal comprising a wanted signal at a first frequency and a modulated signal at a second frequency. The modulated signal may be a product of a reciprocal-mixing of an unwanted signal with a phase noise. The second frequency may be greater than the first frequency, and at least a portion of the modulated signal may overlap the wanted signal, adding a reciprocal-mixing noise to the wanted signal. Using the first signal, a narrow second signal may be generated at a third frequency, twice the second frequency. At a second mixer, the second signal may be mixed with the first signal to generate a third signal. The third signal may be subtracted from the first signal to remove a reciprocal-mixing noise and to generate the wanted signal at the first frequency without the reciprocal-mixing noise.

    Abstract translation: 用于相互混合噪声消除的方法可以包括从第一混频器接收包括第一频率的有用信号的第一信号和以第二频率调制的信号。 调制信号可以是不想要的信号与相位噪声的互相混合的乘积。 第二频率可以大于第一频率，并且调制信号的至少一部分可能与有用信号重叠，将有用信号的互易混合噪声相加。 使用第一信号，可以以第三频率产生窄的第二信号，是第二频率的两倍。 在第二混频器中，第二信号可以与第一信号混合以产生第三信号。 可以从第一信号中减去第三信号以去除倒数混合噪声，并在第一频率下产生有用信号而没有互易混合噪声。

    PHASE-NOISE REDUCTION TECHNIQUE USING FREQUENCY-TO-CURRENT CONVERSION WITH BASEBAND INTEGRATION
    7.
    发明申请
    PHASE-NOISE REDUCTION TECHNIQUE USING FREQUENCY-TO-CURRENT CONVERSION WITH BASEBAND INTEGRATION 有权
    使用基带级积分的频率到电流转换的相位噪声减少技术

    公开(公告)号：US20140141739A1

    公开(公告)日：2014-05-22

    申请号：US13681316

    申请日：2012-11-19

    Applicant: BROADCOM CORPORATION

    Inventor： Mohyee MIKHEMAR ,  David MURPHY ,  Hooman DARABI

    IPC: H04B17/00

    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。

    RF FRONT-END WITH WIDEBAND TRANSMITTER/RECEIVER ISOLATION
    10.
    发明申请
    RF FRONT-END WITH WIDEBAND TRANSMITTER/RECEIVER ISOLATION 有权
    RF前端带宽带发射器/接收器隔离

    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。

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