公开(公告)号：US08868018B2

公开(公告)日：2014-10-21

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 ,  H04B10/69

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：US08862077B2

公开(公告)日：2014-10-14

申请号：US13942589

申请日：2013-07-15

Applicant: Broadcom Corporation

Inventor： Ahmad Mirzaei ,  John Leete ,  Hooman Darabi

IPC: H04B1/04 ,  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。

公开(公告)号：US08712361B1

公开(公告)日：2014-04-29

申请号：US13683896

申请日：2012-11-21

Applicant: Broadcom Corporation

Inventor： Mohyee Mikhemar ,  David Murphy ,  Hooman Darabi

IPC: H04B1/10

CPC classification number: H04B1/12 ,  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. The second frequency may be greater than the first frequency, and at least a portion of the modulated signal may overlap the wanted signal, adding a reciprocal-mixing noise to the wanted signal. Using the first signal, a narrow second signal may be generated at a third frequency, twice the second frequency. At a second mixer, the second signal may be mixed with the first signal to generate a third signal. The third signal may be subtracted from the first signal to remove a reciprocal-mixing noise and 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。 第二频率可以大于第一频率，并且调制信号的至少一部分可以与有用信号重叠，将有用信号的互易混合噪声相加。 使用第一信号，可以以第三频率产生窄的第二信号，是第二频率的两倍。 在第二混频器中，第二信号可以与第一信号混合以产生第三信号。 可以从第一信号中减去第三信号以去除倒数混合噪声，并在第一频率下产生有用信号而没有互易混合噪声。

公开(公告)号：US08670739B1

公开(公告)日：2014-03-11

申请号：US13736915

申请日：2013-01-08

Applicant: Broadcom Corporation

Inventor： David Murphy ,  Hooman Darabi

IPC: H04B1/10 ,  H04B17/00

CPC classification number: H04B1/1027 ,  H04B15/06 ,  H04B2001/1063

Abstract: A high quality factor frequency translated bandpass filter (FTBPF) with harmonic rejection includes multiple transconductance cells configured to convert a received radio frequency (RF) voltage signal into respective RF current signals. Each of the transconductance cells are weighted such that the FTBPF has an effective transconductance of a first magnitude for frequency components of the received RF 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 received RF voltage signal arising from harmonics at integer multiples of the first harmonic. The FTBPF also includes multiple frequency conversion cells coupled to the transconductance cells and configured to mix respective ones of the RF current signals with multiple non-overlapping local oscillator signals. The FTBPF also includes multiple baseband impedances coupled to outputs of the frequency conversion cells and ground and are frequency translated by mixed signals from the frequency conversion cells.

Abstract translation: 具有谐波抑制的高质量因子频率转换带通滤波器（FTBPF）包括被配置为将接收的射频（RF）电压信号转换成相应的RF电流信号的多个跨导单元。 每个跨导单元被加权，使得FTBPF对于从第一谐波产生的接收的RF电压信号的频率分量和对于频率分量的第一幅度小于第一幅度的第二幅度的有效跨导，具有第一幅度的有效跨导 所接收的RF电压信号由一次谐波的整数倍的谐波产生。 FTBPF还包括耦合到跨导单元的多个频率转换单元，并且被配置为将各个RF电流信号与多个不重叠的本地振荡器信号混合。 FTBPF还包括耦合到频率转换单元和地的输出的多个基带阻抗，并且由来自频率转换单元的混合信号进行频率转换。

公开(公告)号：US20140016729A1

公开(公告)日：2014-01-16

申请号：US14028161

申请日：2013-09-16

Applicant: BROADCOM CORPORATION

Inventor： Ahmad Mirzaei ,  Hooman Darabi

IPC: H04L27/06

CPC classification number: H04L27/06 ,  H04L27/34

Abstract: A SAW-less receiver includes an FEM interface module, an RF to IF receiver section, and a receiver IF to baseband section. The RF to IF receiver section includes a mixing module, a mixed buffer section, and a frequency translated BPF (FTBPF) circuit module. The mixing module converts an inbound RF signal into an in-phase (I) mixed signal and a quadrature (Q) mixed signal. The mixed buffer section filters and buffers the I mixed signal and filter and buffer the Q mixed signal. The FTBPF circuit module frequency translates a baseband filter response to an IF filter response such that the FTBPF circuit module filters undesired signal components of the IF I signal and the IF Q signal to produce an inbound IF signal. The receiver IF to baseband section converts the inbound IF signal into one or more inbound symbol streams.

Abstract translation: 无SAW接收机包括FEM接口模块，RF至IF接收机部分和接收机IF到基带部分。 RF至IF接收器部分包括混合模块，混合缓冲器部分和频率转换BPF（FTBPF）电路模块。 混合模块将入站RF信号转换为同相（I）混合信号和正交（Q）混合信号。 混合缓冲区对I混合信号进行滤波和缓冲，并对Q混合信号进行滤波和缓冲。 FTBPF电路模块频率将基带滤波器响应转换为IF滤波器响应，使得FTBPF电路模块滤除IF I信号和IF Q信号的不期望的信号分量以产生入站IF信号。 接收机IF到基带部分将入站IF信号转换成一个或多个入站符号流。

公开(公告)号：US20130241670A1

公开(公告)日：2013-09-19

申请号：US13716005

申请日：2012-12-14

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  Hooman Darabi

IPC: H01P1/213

CPC classification number: H03H7/38 ,  H02J17/00 ,  H03H7/463 ,  H04B1/0458 ,  H04B1/18 ,  H04B1/52 ,  H04B1/525

Abstract: A power distributing duplexer system is provided. In some aspects, the system includes a duplexer configured to couple an antenna to a transmitter and a receiver. The system also includes a balancing network coupled to the duplexer. The balancing network includes a network impedance. The balancing network is configured to adjust the network impedance to match an antenna impedance of the antenna. The balancing network includes a plurality of balancing network modules coupled to the duplexer. Each of the plurality of balancing network modules is configured to receive a portion of an output voltage from the duplexer.

Abstract translation: 提供配电双工器系统。 在一些方面，该系统包括配置成将天线耦合到发射机和接收机的双工器。 该系统还包括耦合到双工器的平衡网络。 平衡网络包括网络阻抗。 平衡网络被配置为调整网络阻抗以匹配天线的天线阻抗。 平衡网络包括耦合到双工器的多个平衡网络模块。 多个平衡网络模块中的每一个被配置为从双工器接收输出电压的一部分。

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：US09712258B2

公开(公告)日：2017-07-18

申请号：US14631714

申请日：2015-02-25

Applicant: BROADCOM CORPORATION

Inventor： Mohyee Mikhemar ,  Hooman Darabi

IPC: H04B15/00 ,  H04B1/48 ,  H04B1/525 ,  H04B1/12 ,  H04L5/14

CPC classification number: H04B15/00 ,  H04B1/123 ,  H04B1/48 ,  H04B1/525 ,  H04L5/14

Abstract: A circuit for a low-loss duplexer with noise cancellation in a receive (RX) path of a transceiver includes a duplexer, a balancing network, and a noise cancellation circuit. The duplexer circuit is coupled to an antenna of the transceiver. The balancing network is coupled to the duplexer and provides an impedance matching an impedance associated with the antenna. The noise cancellation circuit senses a noise signal generated by the balancing network and uses the sensed noise signal to improve a signal-to-noise ratio (SNR) of the RX path.

公开(公告)号：US20160381632A1

公开(公告)日：2016-12-29

申请号：US14804194

申请日：2015-07-20

Applicant: BROADCOM CORPORATION

Inventor： Alex Ahmad MIRZAEI ,  Hooman Darabi ,  Masoud Kahrizi ,  Behnam Mohammadi

IPC: H04W52/02 ,  H04B1/04

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.

Abstract translation: 可编程发射机电路可以耦合到控制器电路。 控制器电路可以被配置为至少基于信号产生控制信号。 发射机电路可以包括多个单元电池。 每个单位单元可以包括相应的第一电流源和相应的第二电流源。 每个单位单元可以被配置为至少基于控制信号被设置为激活状态或去激活状态。 对于多个单位单元的单位单元，当单位单元设置为激活状态时，各个第一电流源或相应的第二电流源可以被配置为产生要施加到负载的电流。

公开(公告)号：US20160352386A1

公开(公告)日：2016-12-01

申请号：US14722641

申请日：2015-05-27

Applicant: Broadcom Corporation

Inventor： Alex MIRZAEI ,  Hooman Darabi

IPC: H04B1/48

CPC classification number: H04B1/525

Abstract: The present disclosure is directed to an apparatus and method for cancelling self-interference caused by full-duplex communication. In a full-duplex communication device, the receiver will generally experience significant self-interference from the full-duplex communication device's own transmitter transmitting a strong outbound signal over the same channel that the receiver is to receive a weak inbound signal. The apparatus and method are configured to adjust a phase and gain of the outbound signal provided at the output of a power amplifier (PA) and inject the phase and gain adjusted outbound signal at the input of a low-noise amplifier (LNA) to cancel the interference from the outbound signal in the inbound signal.

Abstract translation: 本公开涉及一种用于消除由全双工通信引起的自身干扰的装置和方法。 在全双工通信设备中，接收机通常将经受来自全双工通信设备本身的发射机的显着的自身干扰，该发射机在接收机接收弱入站信号的相同信道上发送强出站信号。 该装置和方法被配置为调节在功率放大器（PA）的输出处提供的出站信号的相位和增益，并且在低噪声放大器（LNA）的输入处注入相位和增益调整的出站信号以取消 来自入站信号的出站信号的干扰。