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：US09742353B2

公开(公告)日：2017-08-22

申请号：US14822809

申请日：2015-08-10

Applicant: BROADCOM CORPORATION

Inventor： David Patrick Murphy ,  Hooman Darabi

IPC: H03K3/282 ,  H03B5/12 ,  H04B1/40

CPC classification number: H03B5/1284 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1265 ,  H03B5/1271 ,  H03B5/1278 ,  H03B5/1296 ,  H03B2200/009 ,  H04B1/40

Abstract: A circuit for an oscillator with common-mode resonance includes a first oscillator circuit and a second oscillator circuit coupled to the first oscillator circuit. Each of the first oscillator circuit or the second oscillator circuit includes a tank circuit, a cross-coupled transistor pair, and one or more capacitors. The tank circuit is formed by coupling a first inductor with a pair of first capacitors. The cross-coupled transistor pair is coupled to the tank circuit, and one or more second capacitors are coupled to the tank circuit and the cross-coupled transistor pair. Each of the first oscillator circuit or the second oscillator circuit allows tuning of a respective common mode (CM) resonance frequency (FCM) to be at twice a respective differential resonance frequency (FD).

公开(公告)号：US09008601B2

公开(公告)日：2015-04-14

申请号：US13969381

申请日：2013-08-16

Applicant: Broadcom Corporation

Inventor： David Patrick Murphy ,  Hooman Darabi

IPC: H04B1/06 ,  H03B5/12 ,  H04B1/40

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1265 ,  H03B5/1296 ,  H04B1/40 ,  Y10T29/4902

Abstract: A circuit for a single differential-inductor oscillator with common-mode resonance may include a tank circuit formed by coupling a first inductor with a pair of first capacitors; a cross-coupled transistor pair coupled to the tank circuit; and one or more second capacitors coupled to the tank circuit and the cross-coupled transistors. The single differential-inductor oscillator may be configured such that a common mode (CM) resonance frequency (FCM) associated with the single differential-inductor oscillator is at twice a differential resonance frequency (FD) associated with the single differential-inductor oscillator.

Abstract translation: 用于具有共模谐振的单个差分电感器振荡器的电路可以包括通过将第一电感器与一对第一电容器耦合而形成的振荡电路; 耦合到所述槽电路的交叉耦合晶体管对; 以及一个或多个第二电容器，其耦合到储能电路和交叉耦合的晶体管。 单个差分电感器振荡器可以被配置为使得与单个差分电感器振荡器相关联的共模（CM）谐振频率（FC）为与单个差分电感器振荡器相关联的差分谐振频率（FD）的两倍。

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

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

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。