公开(公告)号：US20140171003A1

公开(公告)日：2014-06-19

申请号：US13719076

申请日：2012-12-18

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  Hooman DARABI

IPC: H04B1/16 ,  H05K13/00

CPC classification number: H04B1/16 ,  H03D7/1441 ,  H03D7/1466 ,  H03F1/086 ,  H03F3/45179 ,  H03F2203/45306 ,  H04B1/0003 ,  Y10T29/49117

Abstract: A circuit for a low-power and blocker-tolerant mixer-amplifier stage may include a complementary mixer formed by transmission gates having complementary structures. The complementary mixer may be configured to receive one or more radio-frequency (RF) signals and to convert the one or more RF signals to intermediate frequency (IF) current signals. A complementary TIA may be coupled to the complementary mixer and may be configured to receive the IF current signals and provide IF voltage signals. The complementary TIA may be formed by coupling an NMOS-TIA and a PMOS-TIA to a common load. A first portion of the complementary mixer may be coupled to the NMOS-TIA and a second portion of the complementary mixer may be coupled to the PMOS-TIA.

Abstract translation: 用于低功率和容阻型混频器 - 放大器级的电路可以包括由具有互补结构的传输门形成的互补混频器。 互补混频器可以被配置为接收一个或多个射频（RF）信号并将一个或多个RF信号转换成中频（IF）电流信号。 互补TIA可以耦合到互补混频器，并且可以被配置为接收IF电流信号并提供IF电压信号。 可以通过将NMOS-TIA和PMOS-TIA耦合到公共负载来形成互补TIA。 互补混频器的第一部分可以耦合到NMOS-TIA，并且互补混频器的第二部分可以耦合到PMOS-TIA。

公开(公告)号：US20140141740A1

公开(公告)日：2014-05-22

申请号：US13681333

申请日：2012-11-19

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  David Murphy ,  Hooman Darabi

IPC: H04B1/10

CPC classification number: H04B1/1027

Abstract: A method for reciprocal-mixing noise cancellation may include receiving a baseband signal down-converted to baseband using a local oscillator (LO). The baseband signal may comprise a wanted signal and a reciprocal mixing noise, which at least partially overlaps the wanted signal and is due to mixing of a blocker signal with a phase noise of the LO. Blocker recovery may be performed on the baseband signal and a blocker estimate signal may be generated from the baseband signal. The phase noise of the LO may be measured and used in generating a phase noise measurement signal. The blocker estimate signal and the phase noise measurement signal may be processed to generate a reconstructed noise signal that may comprise the overlapping reciprocal mixing noise. The reconstructed noise signal may be subtracted from the baseband signal to provide the wanted signal free from to the reciprocal mixing noise.

Abstract translation: 用于相互混合噪声消除的方法可以包括使用本地振荡器（LO）接收被下变频到基带的基带信号。 基带信号可以包括有用信号和互易混合噪声，其与有用信号至少部分重叠，并且是由于阻塞信号与LO的相位噪声的混合引起的。 可以对基带信号执行阻塞恢复，并且可以从基带信号生成阻塞估计信号。 可以测量LO的相位噪声并用于产生相位噪声测量信号。 阻塞估计信号和相位噪声测量信号可被处理以产生重构的噪声信号，其可以包括重叠的互倒混合噪声。 可以从基带信号中减去重建的噪声信号，以提供不需要的混合噪声的有用信号。

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。

公开(公告)号：US20140171005A1

公开(公告)日：2014-06-19

申请号：US13719091

申请日：2012-12-18

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  Amir HADJI-ABDOLHAMID ,  Hooman DARABI

IPC: H03F1/26 ,  H04B1/18 ,  H03G3/00

CPC classification number: H04B1/123 ,  H03F1/223 ,  H03F3/19 ,  H03F3/195 ,  H03F3/45179 ,  H03F3/45475 ,  H03F2200/165 ,  H03F2200/294 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2203/45394 ,  H03F2203/45512 ,  H03F2203/45528 ,  H03F2203/45631 ,  H03F2203/45686 ,  H03F2203/45702 ,  H03G3/00 ,  H03G3/18 ,  H03H7/0138 ,  H03H7/06 ,  H03H7/17 ,  H04B1/18

Abstract: A circuit for a low-noise interface between an amplifier and an analog-to-digital converter (ADC) may comprise a capacitor element having a capacitance of C coupled between a first and second output node of the amplifier. A first resistor R1 may be coupled in parallel with the capacitor. A second resistor R2 may be coupled between the first output node of the amplifier and a first input node of the ADC. A third resistor R3 may be coupled between the second output node of the amplifier and a second input node of the ADC. Initial values of the resistances R1, R2, and R3 may be selected to provide a desired value RL for a load resistance of the amplifier. A value of the capacitance C may be selected so that, in combination with the desired value RL, a desired bandwidth for the amplifier is achieved.

Abstract translation: 用于放大器和模数转换器（ADC）之间的低噪声接口的电路可以包括具有耦合在放大器的第一和第二输出节点之间的C电容的电容器元件。 第一电阻器R1可以与电容器并联耦合。 第二电阻器R2可以耦合在放大器的第一输出节点和ADC的第一输入节点之间。 第三电阻器R3可以耦合在放大器的第二输出节点和ADC的第二输入节点之间。 可以选择电阻R1，R2和R3的初始值来为放大器的负载电阻提供期望值RL。 可以选择电容C的值，使得结合期望值RL，实现放大器的期望带宽。

公开(公告)号：US20140169510A1

公开(公告)日：2014-06-19

申请号：US13719125

申请日：2012-12-18

Applicant: BROADCOM CORPORATION

Inventor： Mohyee MIKHEMAR ,  Hooman DARABI

IPC: H04B7/005

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：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：US20130285764A1

公开(公告)日：2013-10-31

申请号：US13930812

申请日：2013-06-28

Applicant: Broadcom Corporation

Inventor： Mohyee MIKHEMAR ,  Hooman DARABI

IPC: H03H7/46 ,  H03H11/42

CPC classification number: H03H11/42 ,  H03H11/32 ,  H03H11/342 ,  H04B5/0093 ,  H04B2001/485

Abstract: An RF front-end with on-chip transmitter/receiver isolation using a gyrator is presented herein. The RF front end is configured to support full-duplex communication and includes a gyrator and a transformer. The gyrator includes two transistors that are configured to isolate the input of a low-noise amplifier (LNA) from the output of a power amplifier (PA). The gyrator is further configured to isolate the output of the PA from the input of the LNA. The gyrator is at least partially or fully capable of being integrated on silicon-based substrate.

Abstract translation: 本文介绍了使用回转器的片内发射机/接收机隔离的RF前端。 RF前端被配置为支持全双工通信，并且包括回转器和变压器。 回转器包括被配置为将低噪声放大器（LNA）的输入与功率放大器（PA）的输出隔离的两个晶体管。 回转器还被配置为将PA的输出与LNA的输入隔离。 回转器至少部分或完全能够集成在硅基基板上。

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。