公开(公告)号：US20140141739A1

公开(公告)日：2014-05-22

申请号：US13681316

申请日：2012-11-19

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  David MURPHY ,  Hooman DARABI

IPC: H04B17/00

CPC classification number: H04B17/0055 ,  H04B17/11 ,  H04B17/345

Abstract: A circuit for measurement of a phase noise of an oscillator may include the oscillator to generate a first signal having the same oscillation frequency as an instantaneous oscillation frequency of the oscillator. The circuit may include a first circuit that is configured to generate a second signal from the first signal. An instantaneous amplitude of the second signal may be related to the oscillation frequency of the first signal. A second circuit may be configured to integrate the second signal to generate a third signal. The third signal can be a measure of the phase noise of the oscillator. The third signal can be used to cancel some or all of the phase noise of the oscillator.

Abstract translation: 用于测量振荡器的相位噪声的电路可以包括振荡器以产生具有与振荡器的瞬时振荡频率相同的振荡频率的第一信号。 电路可以包括被配置为从第一信号产生第二信号的第一电路。 第二信号的瞬时振幅可以与第一信号的振荡频率有关。 第二电路可以被配置为对第二信号进行积分以产生第三信号。 第三个信号可以是振荡器的相位噪声的量度。 第三个信号可用于消除振荡器的一些或全部相位噪声。

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。

公开(公告)号：US20180048339A1

公开(公告)日：2018-02-15

申请号：US15240344

申请日：2016-08-18

Applicant: BROADCOM CORPORATION

Inventor： Hao WU ,  David Patrick MURPHY ,  Hooman DARABI

IPC: H04B1/10 ,  H03D7/14

CPC classification number: H04B1/109 ,  H03D7/1466 ,  H03D7/165 ,  H03D2200/0074 ,  H03D2200/0086 ,  H04B1/1018 ,  H04B1/1036 ,  H04W4/80

Abstract: A receiver includes circuitry configured to determine one or more first local oscillator (LO) harmonics that correspond to one or more first spectrum segments of a down-converted received signal based on characteristics of the received signal. The one or more first LO harmonics of the received signal are amplified by applying one or more first transconductance coefficients to one or more first harmonic selective transinductance amplifiers (TIAs) corresponding to the one or more first spectrum segments. Digitized outputs of the plurality of harmonic selective TIAs are calibrated based on an amount of signal leakage between the plurality of spectrum segments of the down-converted received signal.

公开(公告)号：US20170207800A1

公开(公告)日：2017-07-20

申请号：US15043107

申请日：2016-02-12

Applicant: BROADCOM CORPORATION

Inventor： David C. GARRETT ,  Franciscus VAN DER GOES ,  Hooman DARABI ,  Ramon A. GOMEZ ,  Murat MESE

IPC: H04B1/00 ,  H04W76/02

CPC classification number: H04W76/15 ,  H04B1/0007

Abstract: A device includes circuitry configured to implement one or more PHY communications protocols to simultaneously communicate with one or more stations via communication links on one or more wireless networks, communicate with additional devices via a backhaul network, and exchange collaboration data, including at least one of protocol data or collaborative beamforming data, with the additional devices via the backhaul network to maintain signal parameters of communications signals with the one or more stations.

公开(公告)号：US20150031313A1

公开(公告)日：2015-01-29

申请号：US13969381

申请日：2013-08-16

Applicant: BROADCOM CORPORATION

Inventor： David Patrick MURPHY ,  Hooman DARABI

IPC: 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：US20140171006A1

公开(公告)日：2014-06-19

申请号：US13736895

申请日：2013-01-08

Applicant: BROADCOM CORPORATION

Inventor： David MURPHY ,  Hooman DARABI

IPC: H04B1/10

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：US20140146718A1

公开(公告)日：2014-05-29

申请号：US13688053

申请日：2012-11-28

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  Hooman DARABI

IPC: H04B1/44 ,  H04L5/14

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：US20160043757A1

公开(公告)日：2016-02-11

申请号：US14920455

申请日：2015-10-22

Applicant: Broadcom Corporation

Inventor： Ahmadreza ROFOUGARAN ,  Hooman DARABI ,  David MURPHY

IPC: H04B1/10

CPC classification number: H04B1/1036 ,  H04B1/10

Abstract: Because of associated disadvantages of narrow-band off-chip radio-frequency (RF) filtering, a mixer-first receiver front-end designed to tolerate blockers with minimal gain compression and noise factor degradation is disclosed. The mixer-first receiver front-end includes two separate down-conversion paths that help to minimize added noise and voltage gain prior to baseband filtering, which are critical factors in eliminating narrow-band off-chip RF filtering.

Abstract translation: 由于窄带片外射频（RF）滤波的相关缺点，公开了设计用于容忍具有最小增益压缩和噪声因子降级的阻塞器的混频器优先接收机前端。 混频器第一接收机前端包括两个单独的下变频路径，有助于在基带滤波之前最大限度地减少附加噪声和电压增益，这是消除窄带片外RF滤波的关键因素。

公开(公告)号：US20150340994A1

公开(公告)日：2015-11-26

申请号：US14817150

申请日：2015-08-03

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  Hooman DARABI

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19 ,  H04B1/18 ,  H03F1/56

CPC classification number: H03F1/0205 ,  H03F1/565 ,  H03F3/19 ,  H03F3/211 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/21106 ,  H04B1/00 ,  H04B1/005 ,  H04B1/18

Abstract: A circuit for a receiver with reconfigurable low-power or wideband operation may comprise one or more main signal paths each coupled to a first port and including a low-noise amplifier (LNA) configured to provide a radio frequency (RF) signal to a main mixer circuit. An auxiliary signal path may be coupled to a second port. The auxiliary signal path may include an auxiliary mixer configured to provide an on-chip matching input impedance that may match an impedance of the antenna. The first port may be coupled to an RF antenna through an off-chip matching circuit, when a low-power operation is desired. The first port may be coupled to the second port and to the RF antenna, when a wideband operation is desired.

Abstract translation: 用于具有可重新配置的低功率或宽带操作的接收机的电路可以包括一个或多个主信号路径，每个主信号路径耦合到第一端口，并且包括低噪声放大器（LNA），低噪声放大器（LNA）被配置为提供射频（RF）信号到主 混频器电路。 辅助信号路径可以耦合到第二端口。 辅助信号路径可以包括配置成提供与天线的阻抗匹配的片上匹配输入阻抗的辅助混频器。 当需要低功率操作时，第一端口可以通过片外匹配电路耦合到RF天线。 当需要宽带操作时，第一端口可以耦合到第二端口和RF天线。

公开(公告)号：US20140191782A1

公开(公告)日：2014-07-10

申请号：US13734805

申请日：2013-01-04

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  Hooman DARABI

IPC: H03B21/00

CPC classification number: H03B21/00 ,  G01L9/12 ,  G01R27/2605 ,  G01R31/016 ,  H03B5/20 ,  H03B5/32 ,  H03K3/0231 ,  H03K3/354

Abstract: A technique for calibration of on-chip resistance (R) and capacitance (C) values using an on-board bypass capacitor may include configuring an on-chip switch to selectively couple an on-chip calibration circuit to an on-chip port. The on-chip calibration circuit may include an RC oscillator having an RC time constant (RCTC). The on-board bypass capacitor may be coupled to the on-chip calibration circuit, by using the on-chip port. The on-chip R and C values may be calibrated using the on-chip calibration circuit and the on-board bypass capacitor.

Abstract translation: 使用板载旁路电容器来校准片上电阻（R）和电容（C）值的技术可以包括配置片内开关以选择性地将片上校准电路耦合到片上端口。 片上校准电路可以包括具有RC时间常数（RCTC）的RC振荡器。 板上旁路电容器可以通过使用片上端口耦合到片上校准电路。 片内R和C值可以使用片上校准电路和板载旁路电容进行校准。