公开(公告)号：US09553615B2

公开(公告)日：2017-01-24

申请号：US15054335

申请日：2016-02-26

Applicant: BROADCOM CORPORATION

Inventor： Amir Hadji-Abdolhamid ,  Bernd Pregardier ,  Masoud Kahrizi

IPC: H04B1/16 ,  H04B1/00 ,  H04W88/06

CPC classification number: H04B1/0067 ,  H04B1/0057 ,  H04B1/16 ,  H04W88/06

Abstract: A single hybrid receiver is provided for processing both single carrier and carrier aggregated (CA) communications signals where carriers are split into independent receive paths without any additional external components. The receiver receives all contiguous and non-contiguous intra-band CA and inter-band CA signals, including those of unequal bandwidths, allowing for improved rejection and balanced rejection of jamming signals on either side of the two carrier signals.

Abstract translation: 提供单个混合接收机用于处理单载波和载波聚合（CA）通信信号，其中载波被分成独立的接收路径而没有任何附加的外部分量。 接收机接收所有连续和不连续的带内CA和带间CA信号，包括不等宽带的CA信号，允许在两个载波信号的任一侧改善干扰信号的抑制和平衡抑制。

公开(公告)号：US20160043700A1

公开(公告)日：2016-02-11

申请号：US14919401

申请日：2015-10-21

Applicant: BROADCOM CORPORATION

Inventor： Behnam Mohammadi ,  Masoud Kahrizi ,  Ahmad Mirzaei ,  Bernd Pregardier ,  John Cumming Leete

IPC: H03G3/30

CPC classification number: H03G3/3036 ,  H03G3/3042

Abstract: A wireless communications transmitter is divided into N binary weighted communication signal processing paths including both fixed and variable gain communication signal processing chains. Specific bit sequences are used to select a combination of fixed and variable gain signal processing paths to adjust to a desired transmitter output power. Alternately, high and low power communication signal processing paths are chosen as needed with the high power communication signal processing path including an odd order harmonic notch filter.

公开(公告)号：US09197381B2

公开(公告)日：2015-11-24

申请号：US13919868

申请日：2013-06-17

Applicant: Broadcom Corporation

Inventor： Masoud Kahrizi ,  Bernd Pregardier ,  John Cumming Leete

IPC: H04L5/00 ,  H04J1/10 ,  H04L27/00

CPC classification number: H04L5/00 ,  H04J1/10 ,  H04L5/001 ,  H04L27/00

Abstract: Various configurations and arrangements of systems and methods for providing multi-carrier aggregation are described. A system in accordance with the disclosure can include a first mixer configured to receive a first signal in a first frequency band, a second mixer configured to receive a second signal in a second frequency band, a third mixer configured to receive the second signal in the second frequency band, and a fourth mixer configured to receive a third signal in a third frequency band. The system can further include a controller configured to selectively activate one of the first mixer and the second mixer, and selectively activate one of the third mixer and the fourth mixer.

Abstract translation: 描述了用于提供多载波聚合的系统和方法的各种配置和布置。 根据本公开的系统可以包括配置为在第一频带中接收第一信号的第一混频器，被配置为在第二频带中接收第二信号的第二混频器，被配置为在第二频带中接收第二信号的第三混频器 以及配置成在第三频带中接收第三信号的第四混频器。 该系统还可以包括控制器，其被配置为选择性地激活第一混合器和第二混合器之一，并且选择性地激活第三混合器和第四混合器中的一个。

公开(公告)号：US20150264688A1

公开(公告)日：2015-09-17

申请号：US14292464

申请日：2014-05-30

Applicant: BROADCOM CORPORATION

Inventor： Masoud Kahrizi ,  Behnam Mohammadi

IPC: H04W72/04

CPC classification number: H04W72/0453 ,  H04L5/001 ,  H04L5/0066 ,  H04L5/143 ,  H04L5/1469

Abstract: A transmitter architecture and methodologies supporting uplink inter-band carrier aggregation (CA). In various embodiments, first and second baseband signals are provided to a plurality of passive mixers that selectively combine the baseband signals with differing local oscillation signals to produce outbound RF signals of at least first and second RF frequencies. Depending on the relevant CA mode of operation, the outbound RF signals are amplified and selectively coupled to at least one transmitting antenna for respective transmission over a plurality of frequency bands.

Abstract translation: 支持上行链路带内载波聚合（CA）的发射机架构和方法。 在各种实施例中，第一和第二基带信号被提供给多个无源混频器，其选择性地组合基带信号与不同的本地振荡信号，以产生至少第一和第二RF频率的出站RF信号。 取决于相关的CA操作模式，出站RF信号被放大并选择性地耦合到至少一个发射天线，用于在多个频带上进行相应的传输。

公开(公告)号：US20150065072A1

公开(公告)日：2015-03-05

申请号：US14040388

申请日：2013-09-27

Applicant: BROADCOM CORPORATION

Inventor： Behnam Mohammadi ,  Masoud Kahrizi ,  Ahmad Mirzaei ,  Bernd Pregardier ,  John Cumming Leete

IPC: H03G3/20

CPC classification number: H03G3/3036 ,  H03G3/3042

Abstract: A wireless communications transmitter is divided into N binary weighted communication signal processing paths including both fixed and variable gain communication signal processing chains. Specific bit sequences are used to select a combination of fixed and variable gain signal processing paths to adjust to a desired transmitter output power. Alternately, high and low power communication signal processing paths are chosen as needed with the high power communication signal processing path including an odd order harmonic notch filter.

Abstract translation: 无线通信发射机被分为包括固定和可变增益通信信号处理链的N个二进制加权通信信号处理路径。 特定比特序列用于选择固定和可变增益信号处理路径的组合，以调整到期望的发射机输出功率。 或者，根据需要选择高功率和低功率通信信号处理路径，其中高功率通信信号处理路径包括奇数阶谐波陷波滤波器。

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

IPC: H03F1/02 ,  H04W52/00 ,  H03F3/21 ,  H04B1/04 ,  H04W52/02

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.

公开(公告)号：US09220106B2

公开(公告)日：2015-12-22

申请号：US14292464

申请日：2014-05-30

Applicant: Broadcom Corporation

Inventor： Masoud Kahrizi ,  Behnam Mohammadi

IPC: H04W72/04

CPC classification number: H04W72/0453 ,  H04L5/001 ,  H04L5/0066 ,  H04L5/143 ,  H04L5/1469

Abstract: A transmitter architecture and methodologies supporting uplink inter-band carrier aggregation (CA). In various embodiments, first and second baseband signals are provided to a plurality of passive mixers that selectively combine the baseband signals with differing local oscillation signals to produce outbound RF signals of at least first and second RF frequencies. Depending on the relevant CA mode of operation, the outbound RF signals are amplified and selectively coupled to at least one transmitting antenna for respective transmission over a plurality of frequency bands.

Abstract translation: 支持上行链路带内载波聚合（CA）的发射机架构和方法。 在各种实施例中，第一和第二基带信号被提供给多个无源混频器，其选择性地组合基带信号与不同的本地振荡信号，以产生至少第一和第二RF频率的出站RF信号。 取决于相关的CA操作模式，出站RF信号被放大并选择性地耦合到至少一个发射天线，用于在多个频带上进行相应的传输。

公开(公告)号：US09197179B2

公开(公告)日：2015-11-24

申请号：US14040388

申请日：2013-09-27

Applicant: BROADCOM CORPORATION

Inventor： Behnam Mohammadi ,  Masoud Kahrizi ,  Ahmad Mirzaei ,  Bernd Pregardier ,  John Cumming Leete

IPC: H04B1/04 ,  H01Q11/12 ,  H03G3/30

CPC classification number: H03G3/3036 ,  H03G3/3042

Abstract: A wireless communications transmitter is divided into N binary weighted communication signal processing paths including both fixed and variable gain communication signal processing chains. Specific bit sequences are used to select a combination of fixed and variable gain signal processing paths to adjust to a desired transmitter output power. Alternately, high and low power communication signal processing paths are chosen as needed with the high power communication signal processing path including an odd order harmonic notch filter.

Abstract translation: 无线通信发射机被分为包括固定和可变增益通信信号处理链的N个二进制加权通信信号处理路径。 特定比特序列用于选择固定和可变增益信号处理路径的组合，以调整到期望的发射机输出功率。 或者，根据需要选择高功率和低功率通信信号处理路径，其中高功率通信信号处理路径包括奇数阶谐波陷波滤波器。

公开(公告)号：US20150092680A1

公开(公告)日：2015-04-02

申请号：US14087269

申请日：2013-11-22

Applicant: Broadcom Corporation

Inventor： Masoud Kahrizi ,  Bernd Pregardier

IPC: H04W72/04

CPC classification number: H04B1/0057 ,  H04L5/001

Abstract: A technique to provide receiver processing of a plurality of component carrier signals that are received from one or more transmitting source by a terminal device, in which filtered component carrier signals are processed and aggregated in the terminal device. Two of the component carrier signals may be in a same frequency band grouping or two or more of the component carrier signals may be in a different band grouping. The receiver architecture allows for flexible processing of the component carrier signals by allocating the different bands into frequency band groupings to process the plurality of component carrier signals.

Abstract translation: 一种用于提供由终端设备从一个或多个发射源接收的多个分量载波信号的接收机处理的技术，其中在终端设备中对滤波分量载波信号进行处理和聚合。 分量载波信号中的两个可以处于相同的频带分组中，或者两个或更多个分量载波信号可以处于不同的频带分组中。 接收器架构允许通过将不同的频带分配到频带分组中以处理多个分量载波信号来灵活地处理分量载波信号。

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

IPC: H04B7/00 ,  H04B1/16 ,  H04B1/18 ,  H04B1/30

CPC classification number: H04B1/16 ,  H04B1/18 ,  H04B1/30

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。