公开(公告)号：US20130252564A1

公开(公告)日：2013-09-26

申请号：US13898287

申请日：2013-05-20

Applicant: Broadcom Corporation

Inventor： Alireza Zolfaghari ,  Henrik Tholstrup Jensen ,  Hooman Darabi

IPC: H04B1/40

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：US09577685B1

公开(公告)日：2017-02-21

申请号：US15044969

申请日：2016-02-16

Applicant: Broadcom Corporation

Inventor： Alex Ahmad Mirzaei ,  Hooman Darabi ,  Masoud Kahrizi

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H04B2001/0425

Abstract: A system includes baseband circuitry and a transmitter. The electrical behavior of the transmitter may cause distortion effects in the transmit output of the transmitter during transmissions based on input signals from the baseband circuitry. The baseband circuitry may reference a calibration evaluation function for multiple transmit variables to pre-distort the input signal to compensate for the distortion effect. Pre-distortion calibration logic may generate the evaluation function using a one-dimensional calibration technique. The evaluation function may facilitate the baseband accessing calibration data without necessarily relying on a look-up table. In some cases, a one-dimensional calibration for multiple transmit variables may use fewer calibration points than a similarly accurate multi-dimensional calibration.

Abstract translation: 系统包括基带电路和发射机。 基于来自基带电路的输入信号，发射机的电气行为可能在传输期间在发射机的发射输出中产生失真效应。 基带电路可以参考多个发射变量的校准评估函数，以预失真输入信号以补偿失真效应。 预失真校准逻辑可以使用一维校准技术产生评估功能。 评估功能可以有助于基带访问校准数据，而不必依赖于查找表。 在某些情况下，对于多个发射变量的一维校准可以使用比类似精确的多维校准更少的校准点。

公开(公告)号：US20150333563A1

公开(公告)日：2015-11-19

申请号：US14808673

申请日：2015-07-24

Applicant: BROADCOM CORPORATION

Inventor： Ahmadreza (Reza) Rofougaran ,  Maryam Rofougaran ,  Brima B. Ibrahim ,  Hooman Darabi

IPC: H02J7/02 ,  H02J17/00 ,  G06F1/26 ,  H02J7/04

CPC classification number: H02J50/80 ,  G06F1/266 ,  H02J1/10 ,  H02J7/04 ,  H02J7/34 ,  H02J17/00 ,  H02J50/12 ,  H02J50/20 ,  H02J50/40 ,  Y10T307/352 ,  Y10T307/391 ,  Y10T307/625

Abstract: A core module for a portable computing device includes wireless power receiver circuitry, battery power circuitry, power supply circuitry, a processor, and an RF link interface. The wireless power receiver module, when operable, receives a wireless power transmit signal and converts it into a supply voltage. The battery power circuitry, when operable, outputs a battery voltage. The power supply circuitry, when operable, converts the supply voltage or the battery voltage into one or more power supply voltages. The processor is operable to select one of the battery voltage, the supply voltage, and one of the one or more power supply voltages to produce a selected voltage. The RF link interface outputs the selected voltage on to an RF link of the portable computing device for providing power to one or more multi mode RF units within the portable computing device.

Abstract translation: 用于便携式计算设备的核心模块包括无线电力接收器电路，电池电源电路，电源电路，处理器和RF链路接口。 无线电力接收器模块在可操作时接收无线功率发射信号并将其转换成电源电压。 电池电源电路在可操作时输出电池电压。 电源电路在可操作时将电源电压或电池电压转换成一个或多个电源电压。 处理器可操作以选择电池电压，电源电压中的一个以及一个或多个电源电压中的一个以产生所选择的电压。 RF链路接口将所选择的电压输出到便携式计算设备的RF链路，以向便携式计算设备内的一个或多个多模式RF单元提供电力。

公开(公告)号：US09154289B2

公开(公告)日：2015-10-06

申请号：US13688053

申请日：2012-11-28

Applicant: BROADCOM CORPORATION

Inventor： Mohyee Mikhemar ,  Hooman Darabi

IPC: H04B1/44 ,  H04L5/14 ,  H04B1/52 ,  H03H7/46

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。

公开(公告)号：US09148186B1

公开(公告)日：2015-09-29

申请号：US14262978

申请日：2014-04-28

Applicant: Broadcom Corporation

Inventor： Hao Wu ,  Mohyee Salahelden Mikhemar ,  David Patrick Murphy ,  Hooman Darabi

IPC: H04L1/00 ,  H04B1/12 ,  H04L25/08 ,  H04L25/06

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。

公开(公告)号：US09112745B2

公开(公告)日：2015-08-18

申请号：US13901390

申请日：2013-05-23

Applicant: Broadcom Corporation

Inventor： Mohyee Mikhemar ,  Amir Hadji-Abdolhamid ,  Hooman Darabi

IPC: H04B1/16 ,  H03F3/45 ,  H04L25/06 ,  H03F1/08 ,  H03G1/00 ,  H03G3/30 ,  H03G3/32 ,  H03H11/12

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。

公开(公告)号：US09059796B2

公开(公告)日：2015-06-16

申请号：US13736895

申请日：2013-01-08

Applicant: Broadcom Corporation

Inventor： David Murphy ,  Hooman Darabi

IPC: H04B1/10 ,  H04B15/06

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。

公开(公告)号：US08868145B2

公开(公告)日：2014-10-21

申请号：US13925161

申请日：2013-06-24

Applicant: Broadcom Corporation

Inventor： Ahmadreza (Reza) Rofougaran ,  Maryam Rofougaran ,  Brima B. Ibrahim ,  Hooman Darabi

IPC: H04M1/00 ,  H04B7/155 ,  G06F3/01 ,  G06F1/16 ,  H04B15/00

CPC classification number: H04B15/00 ,  G06F1/1626 ,  G06F1/1643 ,  G06F1/1698 ,  G06F3/017 ,  H04B7/15507

Abstract: A portable computing device includes a radio frequency (RF) wired link, a core module, and a plurality of multi-mode RF units. When one or more of the multi-mode RF units are supporting a high-speed data communication, the core module is operable to detect a blocker that is adversely affecting the high-speed data communication. The core module is further operable to determine whether a radiation pattern alternative for the high-speed data communication will reduce the adverse affects on the high-speed data communication. When the radiation pattern alternative for the high-speed data communication will reduce the adverse affects on the high-speed data communication, the core module is further operable to enable the radiation pattern alternative. The one or more multi-mode RF units are operable to adjust at least one of transmission and reception of the high-speed data communication in accordance with the radiation pattern alternative.

Abstract translation: 便携式计算设备包括射频（RF）有线链路，核心模块和多个多模RF单元。 当一个或多个多模RF单元支持高速数据通信时，核心模块可操作以检测对高速数据通信有不利影响的阻塞器。 核心模块还可操作以确定用于高速数据通信的辐射模式替代方案是否将减少对高速数据通信的不利影响。 当用于高速数据通信的辐射模式替代方案将减少对高速数据通信的不利影响时，核心模块进一步可操作以使辐射模式可选。 所述一个或多个多模式RF单元可操作以根据所述辐射模式替代来调整所述高速数据通信的发送和接收中的至少一个。

公开(公告)号：US08862087B2

公开(公告)日：2014-10-14

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。

公开(公告)号：US08824988B2

公开(公告)日：2014-09-02

申请号：US13681333

申请日：2012-11-19

Applicant: Broadcom Corporation

Inventor： Mohyee Mikhemar ,  David Murphy ,  Hooman Darabi

IPC: H04B17/00 ,  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以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。