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公开(公告)号：US20130343237A1
公开(公告)日：2013-12-26
申请号：US14012098
申请日：2013-08-28
Applicant: Broadcom Corporation
Inventor： Mohyee Mikhemar , Hooman Darabi
IPC: H04L5/14
CPC classification number: H04L5/1461 , H03F1/56 , H03F3/195 , H03F2200/294 , H03F2200/537 , H03H7/40 , H04B1/0458 , H04B1/10 , H04B1/18 , H04B1/525 , H04B1/581
Abstract: A radio front end includes a power amplifier, a tone injection module, a duplexer, a balancing network, and a processor. The tone injection module is operable, in a first mode, to produce a tone having a carrier frequency that is substantially similar to a carrier frequency of an inbound wireless signal. The duplexer is operable, in the first mode, to provide electrical isolation between the outbound wireless signal and a combination signal of the tone and inbound wireless signal and is operable, in a second mode, to provide electrical isolation between the outbound wireless signal and the inbound wireless signal. The processor is operable to determine an amplitude of a tone component of the combination signal; correlate the amplitude of the tone component to an inbound frequency band isolation; and adjust baseband processing of a down converted representation of the combination signal based on the inbound frequency band isolation.
Abstract translation: 无线电前端包括功率放大器，音调注入模块，双工器，平衡网络和处理器。 音调注入模块在第一模式中可操作地产生具有与入站无线信号的载波频率基本相似的载波频率的音调。 双工器在第一模式中可操作地在出站无线信号和音调和入站无线信号的组合信号之间提供电隔离，并且在第二模式中可操作地提供出站无线信号和 入站无线信号。 处理器可操作以确定组合信号的音调分量的幅度; 将音调分量的幅度与入站频带隔离相关; 并且基于入站频带隔离来调整组合信号的下变频表示的基带处理。
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公开(公告)号：US08503518B2
公开(公告)日：2013-08-06
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
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。
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公开(公告)号：US09629093B2
公开(公告)日：2017-04-18
申请号：US14804194
申请日：2015-07-20
Applicant: BROADCOM CORPORATION
Inventor： Alex Ahmad Mirzaei , Hooman Darabi , Masoud Kahrizi , Behnam Mohammadi
CPC classification number: H04W52/028 , H03F1/02 , H03F1/34 , H03F3/24 , H04B2001/0433 , H04B2001/045 , Y02D70/00 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146
Abstract: A programmable transmitter circuit may be coupled to a controller circuit. The controller circuit may be configured to generate control signals based at least on a signal. The transmitter circuit may include a plurality of unit cells. Each unit cell may include a respective first current source and a respective second current source. Each unit cell may be configured to be set in an activated state or a deactivated state based at least on the control signals. For a unit cell of the plurality of unit cells, when the unit cell is set in the activated state, the respective first current source or the respective second current source may be configured to generate a current to be applied to a load.
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公开(公告)号：US09461680B1
公开(公告)日：2016-10-04
申请号：US14687653
申请日：2015-04-15
Applicant: Broadcom Corporation
Inventor： Alex Ahmad Mirzaei , Hooman Darabi
CPC classification number: H04B1/16
Abstract: A system includes a first filter circuitry and one or more second filter circuitry. The first filter circuitry can operate at a frequency of a wireless signal to filter the wireless signal to attenuate undesired feedthrough components and pass through a desired component. The system can also include a multi-phase mixer to convert the frequency of the wireless signal to a lower frequency and divide the wireless signal into at least four phase shifted baseband signal components. The second filter circuitry can operate at the lower frequency to filter the phase shifted baseband signal components to attenuate undesired feedthrough components and pass through a desired component. The system can also include a matrix to combine the baseband signal components to form an output signal.
Abstract translation: 系统包括第一滤波器电路和一个或多个第二滤波器电路。 第一滤波器电路可以以无线信号的频率工作，以对无线信号进行滤波，以衰减不需要的馈通分量并通过所需的分量。 该系统还可以包括多相混频器，以将无线信号的频率转换为较低的频率，并将无线信号分成至少四个相移的基带信号分量。 第二滤波器电路可以在较低频率下操作以对相移的基带信号分量进行滤波，以衰减不期望的馈通分量并通过所需的分量。 该系统还可以包括用于组合基带信号分量以形成输出信号的矩阵。
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35.发明申请公开(公告)号：US20150288398A1
公开(公告)日：2015-10-08
申请号：US14262978
申请日：2014-04-28
Applicant: Broadcom Corporation
Inventor： Hao Wu , Mohyee Salahelden Mikhemar , David Patrick Murphy , Hooman Darabi
CPC classification number: H04B1/123
Abstract: A radio receiver supporting cancellation of thermal and phase noise in a down-converted RF signal. An inbound RF signal and blocking signal are provided directly to a passive mixer for down-conversion into a first baseband signal having data, thermal noise, and reciprocal mixing (RM) noise components. The inbound signals are also provided to a transconductance circuit, the output of which is provided to a second passive mixer for conversion into a current signal having data and blocking signal components, and a RM image. The blocking signal component and the RM image are mixed with a second LO signal, derived from the blocking signal, to produce a RM noise cancellation signal. The data component of the current signal is converted into a second baseband signal having data and thermal noise components. The first baseband signal, second baseband signal and RM noise cancellation signal are then combined through harmonic recombination.
Abstract translation: 支持降低转换的RF信号中的热和相位噪声的无线电接收器。 入站RF信号和阻塞信号被直接提供给无源混频器，用于下变频成具有数据，热噪声和互易混合（RM）噪声分量的第一基带信号。 入射信号还提供给跨导电路，其输出被提供给第二无源混频器，用于转换成具有数据和阻塞信号分量的电流信号以及RM图像。 阻塞信号分量和RM图像与从阻塞信号导出的第二LO信号混合，以产生RM噪声消除信号。 当前信号的数据分量被转换成具有数据和热噪声分量的第二基带信号。 然后通过谐波复合来组合第一基带信号，第二基带信号和RM噪声消除信号。
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Patent Agency Ranking
公开(公告)号：US09143307B2
公开(公告)日：2015-09-22
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。
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公开(公告)号：US20150236736A1
公开(公告)日：2015-08-20
申请号：US14702609
申请日：2015-05-01
Applicant: Broadcom Corporation
Inventor： David MURPHY , Hooman Darabi
CPC classification number: H04B1/1081 , H03D7/18 , H04B1/10 , H04B15/06
Abstract: A radio frequency (RF) noise-cancelling receiver includes first transconductance cells configured to produce respective weighted current signals proportional to an input voltage signal. The RF receiver includes frequency conversion cells coupled to the first transconductance cells and configured to mix the weighted current signals with a plurality of non-overlapping local oscillator (LO) signals to produce downconverted current signals. The RF receiver includes transimpedance amplifiers coupled to the frequency conversion cells and configured to produce output voltage signals proportional to the downconverted current signals. The transimpedance amplifiers include second transconductance cells. Each of the first and second transconductance cells has an effective transconductance of a first magnitude for frequency components of the input voltage signal arising from a first harmonic and an effective transconductance of a second magnitude less than the first magnitude for frequency components of the input voltage signal arising from harmonics at integer multiples of the first harmonic.
Abstract translation: 射频（RF）噪声消除接收机包括被配置为产生与输入电压信号成比例的各个加权电流信号的第一跨导单元。 RF接收机包括耦合到第一跨导单元的频率转换单元，并且被配置为将加权的电流信号与多个非重叠的本地振荡器（LO）信号混合以产生下变频的电流信号。 RF接收机包括耦合到频率转换单元并被配置为产生与下变频电流信号成比例的输出电压信号的跨阻放大器。 跨阻放大器包括第二跨导电池。 第一和第二跨导单元中的每一个具有针对由第一谐波产生的输入电压信号的频率分量的第一幅度的有效跨导和小于输入电压信号的频率分量的第一幅度的第二幅度的有效跨导 由一次谐波的整数倍的谐波产生。
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公开(公告)号：US09106416B2
公开(公告)日：2015-08-11
申请号：US14012098
申请日：2013-08-28
Applicant: BROADCOM CORPORATION
Inventor： Mohyee Mikhemar , Hooman Darabi
CPC classification number: H04L5/1461 , H03F1/56 , H03F3/195 , H03F2200/294 , H03F2200/537 , H03H7/40 , H04B1/0458 , H04B1/10 , H04B1/18 , H04B1/525 , H04B1/581
Abstract: A radio front end includes a power amplifier, a tone injection module, a duplexer, a balancing network, and a processor. The tone injection module is operable, in a first mode, to produce a tone having a carrier frequency that is substantially similar to a carrier frequency of an inbound wireless signal. The duplexer is operable, in the first mode, to provide electrical isolation between the outbound wireless signal and a combination signal of the tone and inbound wireless signal and is operable, in a second mode, to provide electrical isolation between the outbound wireless signal and the inbound wireless signal. The processor is operable to determine an amplitude of a tone component of the combination signal; correlate the amplitude of the tone component to an inbound frequency band isolation; and adjust baseband processing of a down converted representation of the combination signal based on the inbound frequency band isolation.
Abstract translation: 无线电前端包括功率放大器，音调注入模块，双工器，平衡网络和处理器。 音调注入模块在第一模式中可操作地产生具有与入站无线信号的载波频率基本相似的载波频率的音调。 双工器在第一模式中可操作地在出站无线信号和音调和入站无线信号的组合信号之间提供电隔离，并且在第二模式中可操作地提供出站无线信号和 入站无线信号。 处理器可操作以确定组合信号的音调分量的幅度; 将音调分量的幅度与入站频带隔离相关; 并且基于入站频带隔离来调整组合信号的下变频表示的基带处理。
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公开(公告)号：US08874057B2
公开(公告)日：2014-10-28
申请号：US13906928
申请日：2013-05-31
Applicant: Broadcom Corporation
Inventor： Mohyee Mikhemar , Hooman Darabi , Masoud Kahrizi
Abstract: According to one embodiment, a compact low-power receiver comprises a front-end producing a front-end gain and a back-end producing a back-end gain. The front-end includes a transconductance amplifier providing digital gain control and outputting an amplified receive signal, a mixer for generating a down-converted signal from the amplified receive signal, and a transimpedance amplifier (TIA) including a current mode buffer. The TIA provides gain control for amplifying the down-converted signal to produce a front-end output signal. In one embodiment, the back end includes a second-order low-pass filter to produce a filtered signal from the front-end output signal and an analog-to-digital converter (ADC), wherein the filtered signal is fed directly to the ADC without direct-current (DC) offset cancellation being performed. In various embodiments, the front-end gain is substantially greater than the back-end gain.
Abstract translation: 根据一个实施例，紧凑型低功率接收机包括产生前端增益的前端和产生后端增益的后端。 前端包括提供数字增益控制和输出放大的接收信号的跨导放大器，用于从放大的接收信号产生下变频信号的混频器，以及包括电流模式缓冲器的跨阻抗放大器（TIA）。 TIA提供用于放大下变频信号以产生前端输出信号的增益控制。 在一个实施例中，后端包括从前端输出信号产生滤波信号的二阶低通滤波器和模数转换器（ADC），其中滤波后的信号被直接馈送到ADC 没有执行直流（DC）偏移消除。 在各种实施例中，前端增益基本上大于后端增益。
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40.发明授权公开(公告)号：US08872593B2
公开(公告)日：2014-10-28
申请号：US13734805
申请日：2013-01-04
Applicant: Broadcom Corporation
Inventor： Mohyee Mikhemar , Hooman Darabi
CPC classification number: H03B21/00 , G01L9/12 , G01R27/2605 , G01R31/016 , H03B5/20 , H03B5/32 , H03K3/0231 , H03K3/354
Abstract: A technique for calibration of on-chip resistance (R) and capacitance (C) values using an on-board bypass capacitor may include configuring an on-chip switch to selectively couple an on-chip calibration circuit to an on-chip port. The on-chip calibration circuit may include an RC oscillator having an RC time constant (RCTC). The on-board bypass capacitor may be coupled to the on-chip calibration circuit, by using the on-chip port. The on-chip R and C values may be calibrated using the on-chip calibration circuit and the on-board bypass capacitor.
Abstract translation: 使用板载旁路电容器来校准片上电阻（R）和电容（C）值的技术可以包括配置片内开关以选择性地将片上校准电路耦合到片上端口。 片上校准电路可以包括具有RC时间常数（RCTC）的RC振荡器。 板上旁路电容器可以通过使用片上端口耦合到片上校准电路。 片内R和C值可以使用片上校准电路和板载旁路电容进行校准。
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