公开(公告)号：US20140073280A1

公开(公告)日：2014-03-13

申请号：US13769209

申请日：2013-02-15

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  David MURPHY ,  Ahmad MIRZAEI ,  Hooman DARABI

IPC: H04B1/10

CPC classification number: H04B1/10 ,  H04B1/1036 ,  H04B1/123 ,  H04B10/6973 ,  H04B2001/1063

Abstract: A system for cancellation of a reciprocal-mixing noise may comprise a down-converter mixer that may be configured to down convert a radio-frequency (RF) signal and to generate a baseband signal. The RF signal may include a desired signal and a blocker signal. A first signal path may be configured to receive the baseband signal and to generate a first signal. A second signal path may be configured to receive the baseband signal and to generate a second signal. A subtraction module may be configured to subtract the second signal from the first signal and to generate an output signal. The second signal may comprise the reciprocal-mixing noise, and the output signal may comprise the desired signal substantially free from the reciprocal-mixing noise.

Abstract translation: 用于消除互混混合噪声的系统可以包括可被配置为降低转换射频（RF）信号并产生基带信号的下变换器混频器。 RF信号可以包括期望的信号和阻塞信号。 第一信号路径可以被配置为接收基带信号并产生第一信号。 第二信号路径可以被配置为接收基带信号并产生第二信号。 减法模块可以被配置为从第一信号中减去第二信号并产生输出信号。 第二信号可以包括互易混合噪声，并且输出信号可以包括基本上没有互易混合噪声的期望信号。

公开(公告)号：US20140321576A1

公开(公告)日：2014-10-30

申请号：US13897326

申请日：2013-05-17

Applicant: Broadcom Corporation

Inventor： Ahmad MIRZAEI ,  Mohyee Salahelden MIKHEMAR ,  Meng-An PAN ,  Rahul MAGOON

IPC: H04B7/06

CPC classification number: H04B7/0682 ,  H04B1/0483

Abstract: A transmitter circuit with a passive mixer network includes a first outbound signal path configured to carry a first outbound signal. The transmitter circuit includes a second outbound signal path configured to carry a second outbound signal. The transmitter circuit includes N passive mixers coupled to the first and second outbound signal paths and configured to up-convert the first and second outbound signals from a first frequency to a second frequency based on a clock cycle, where N is a positive even integer. The first and second outbound signals are passed through the N passive mixers during each phase of 2*N phases in the clock cycle. The transmitter circuit also includes N radio frequency signal paths coupled to an output of respective ones of the N passive mixers and configured to receive the first and second outbound signals in the second frequency during each phase of the clock cycle.

Abstract translation: 具有无源混频器网络的发射机电路包括被配置为携带第一出站信号的第一出站信号路径。 发射机电路包括被配置为携带第二出站信号的第二出站信号路径。 发射机电路包括耦合到第一和第二出站信号路径的N个无源混频器，并且被配置为基于时钟周期将第一和第二出站信号从第一频率上升到第二频率，其中N是正均匀整数。 第一和第二出站信号在时钟周期的2 * N个相位的每个阶段通过N个无源混频器。 发射机电路还包括N个无线电频率信号路径，其耦合到N个无源混频器中的相应的无源混频器的输出，并被配置为在时钟周期的每个阶段期间以第二频率接收第一和第二出站信号。

公开(公告)号：US20140191815A1

公开(公告)日：2014-07-10

申请号：US13802408

申请日：2013-03-13

Applicant: BROADCOM CORPORATION

Inventor： Ahmad MIRZAEI ,  Hooman DARABI

IPC: H03L7/085

CPC classification number: H03L7/099 ,  H03L7/06 ,  H03L7/085 ,  H03L7/101 ,  H03L7/18 ,  H03L2207/14 ,  H04B1/0475 ,  H04B1/525 ,  H04B2001/0491

Abstract: A frequency-control circuit includes a phase frequency detector configured to receive a reference frequency signal and generate an output detection signal. The phase frequency detector can be configured to detect a difference in phase and frequency between the reference frequency signal and a feedback of the output frequency signal. The frequency-control circuit also includes a frequency divider that is configured to apply a correction voltage to a feedback of the output frequency signal, the correction voltage being a function of a pulling signal having one or more unwanted frequency components. The frequency-control circuit also includes a loop filter configured to filter the output detection signal including the correction voltage and generate a control voltage signal. The frequency-control circuit also includes a voltage-controlled oscillator configured to receive the control voltage signal and generate an output frequency signal.

Abstract translation: 频率控制电路包括被配置为接收参考频率信号并产生输出检测信号的相位频率检测器。 相位频率检测器可以被配置为检测参考频率信号和输出频率信号的反馈之间的相位和频率的差异。 频率控制电路还包括分频器，其被配置为将校正电压施加到输出频率信号的反馈，校正电压是具有一个或多个不需要的频率分量的拉动信号的函数。 频率控制电路还包括环路滤波器，其被配置为对包括校正电压的输出检测信号进行滤波并产生控制电压信号。 频率控制电路还包括被配置为接收控制电压信号并产生输出频率信号的压控振荡器。

公开(公告)号：US20140191812A1

公开(公告)日：2014-07-10

申请号：US13802395

申请日：2013-03-13

Applicant: BROADCOM CORPORATION

Inventor： Ahmad MIRZAEI ,  Hooman DARABI

IPC: H03L7/085

CPC classification number: H03L7/099 ,  H03L7/06 ,  H03L7/085 ,  H03L7/101 ,  H03L7/18 ,  H03L2207/14 ,  H04B1/0475 ,  H04B1/525 ,  H04B2001/0491

Abstract: A frequency-control circuit includes a phase frequency detector configured to receive a reference frequency signal and generate an output detection signal. The phase frequency detector can be configured to detect a difference in phase and frequency between the reference frequency signal and a feedback of the output frequency signal. The frequency-control circuit also includes a current source applied to the output detection signal to form a correction voltage that is a function of a pulling signal having one or more unwanted frequency components. The frequency-control circuit also includes a loop filter configured to filter the output detection signal including the correction voltage and generate a control voltage signal. The frequency-control circuit also includes a voltage-controlled oscillator configured to receive the control voltage signal and generate an output frequency signal.

Abstract translation: 频率控制电路包括被配置为接收参考频率信号并产生输出检测信号的相位频率检测器。 相位频率检测器可以被配置为检测参考频率信号和输出频率信号的反馈之间的相位和频率的差异。 频率控制电路还包括施加到输出检测信号的电流源，以形成作为具有一个或多个不想要的频率分量的拉动信号的函数的校正电压。 频率控制电路还包括环路滤波器，其被配置为对包括校正电压的输出检测信号进行滤波并产生控制电压信号。 频率控制电路还包括被配置为接收控制电压信号并产生输出频率信号的压控振荡器。

公开(公告)号：US20140191811A1

公开(公告)日：2014-07-10

申请号：US13802422

申请日：2013-03-13

Applicant: BROADCOM CORPORATION

Inventor： Ahmad MIRZAEI ,  Hooman DARABI

IPC: H03L5/00

CPC classification number: H03L7/099 ,  H03L7/06 ,  H03L7/085 ,  H03L7/101 ,  H03L7/18 ,  H03L2207/14 ,  H04B1/0475 ,  H04B1/525 ,  H04B2001/0491

Abstract: A calibration circuit includes a combinational gate configured to receive a voltage-controlled oscillator (VCO) output signal and a selected reference signal to detect a phase difference between the VCO output signal and the selected reference signal and generate an output binary signal, in which the VCO output signal has one or more unwanted frequency components. The calibration circuit also includes a loop filter configured to filter the output binary signal and generate a filtered calibration signal. The calibration circuit also includes an analog-to-digital converter configured to convert the filtered calibration signal from the analog domain to the digital domain and generate a converted calibration signal. The calibration circuit also includes a processor configured to compute the converted calibration signal and determine components of a baseband signal that cancels the one or more unwanted frequency components of the VCO output signal.

Abstract translation: 校准电路包括组合门，其被配置为接收压控振荡器（VCO）输出信号和选择的参考信号，以检测VCO输出信号和所选参考信号之间的相位差，并产生输出二进制信号，其中 VCO输出信号具有一个或多个不需要的频率分量。 校准电路还包括环路滤波器，其被配置为对输出的二进制信号进行滤波并产生滤波的校准信号。 校准电路还包括模数转换器，其被配置为将滤波的校准信号从模拟域转换为数字域并产生转换的校准信号。 校准电路还包括被配置为计算转换的校准信号并确定消除VCO输出信号的一个或多个不想要的频率分量的基带信号的分量的处理器。

公开(公告)号：US20130303095A1

公开(公告)日：2013-11-14

申请号：US13942589

申请日：2013-07-15

Applicant: BROADCOM CORPORATION

Inventor： Ahmad MIRZAEI ,  John LEETE ,  Hooman DARABI

IPC: H04B1/62

CPC classification number: H04B1/62 ,  H04B1/0458 ,  H04B2001/0416

Abstract: An apparatus includes a dynamically configurable transformer configured to provide a gain to a target signal. The gain is dynamically configurable. The dynamically configurable transformer includes at least one parallel resistive element configured to be dynamically activated in parallel with a load.

Abstract translation: 一种装置包括被配置为向目标信号提供增益的动态可配置变压器。 增益是可动态配置的。 动态可配置的变压器包括至少一个并联电阻元件，其被配置为与负载并联地动态地激活。