Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a quadrature feedback mixer configuration
    12.
    发明授权
    Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a quadrature feedback mixer configuration 有权
    通过利用具有正交反馈混频器配置的数字预失真方案来补偿发射机中的估计失真的方法和系统

    公开(公告)号:US08532577B2

    公开(公告)日:2013-09-10

    申请号:US13484474

    申请日:2012-05-31

    IPC分类号: H04B1/00

    摘要: Aspects of a method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a quadrature feedback mixer configuration are presented. Aspects of the system may include an RF transmitter that enables generation of an RF output signal in response to one or more generated input signals. One or more feedback signals may be generated by performing frequency downconversion on the RF output signal within a corresponding one or more feedback mixer circuits. The generated one or more feedback signals may be inserted at a corresponding one or more insertion points in an RF receiver. Each insertion point may be between a receiver mixer circuit and corresponding circuits that generate a baseband signal based on the corresponding one of the feedback signals.

    摘要翻译: 提出了通过利用具有正交反馈混频器配置的数字预失真方案来补偿发射机中的估计失真的方法和系统的方面。 系统的方面可以包括RF发射器,其能够响应于一个或多个所生成的输入信号而产生RF输出信号。 可以通过对相应的一个或多个反馈混频器电路中的RF输出信号执行频率下变频来产生一个或多个反馈信号。 所生成的一个或多个反馈信号可以插入RF接收器中相应的一个或多个插入点。 每个插入点可以在接收机混合器电路和基于相应的一个反馈信号产生基带信号的相应电路之间。

    METHOD AND SYSTEM FOR A LINEARIZED TRANSMITTER INCLUDING A POWER AMPLIFIER
    14.
    发明申请
    METHOD AND SYSTEM FOR A LINEARIZED TRANSMITTER INCLUDING A POWER AMPLIFIER 失效
    一种包含功率放大器的线性发射机的方法和系统

    公开(公告)号:US20080139132A1

    公开(公告)日:2008-06-12

    申请号:US11762573

    申请日:2007-06-13

    IPC分类号: H04B1/02

    摘要: Various aspect of a system for a linearized transmitter including a power amplifier may include at least one transconductance amplifier that enables generation of a single analog quadrature signal. Transmitter mixers may enable generation of a plurality of upconverted RF signals in a corresponding plurality of RF processing chains based on the generated single analog quadrature signal. In various embodiments of the invention, a gain stage, for example gain stage, may also be referred to as an RF processing chain. Power amplifier circuit may enable generation of a corresponding plurality of RF output signals within a wireless communication system based on the generated plurality of upconverted RF signals.

    摘要翻译: 用于包括功率放大器的线性化发射机的系统的各个方面可以包括能够产生单个模拟正交信号的至少一个跨导放大器。 发射机混频器可以使得能够基于所生成的单个模拟正交信号在对应的多个RF处理链中产生多个上变频RF信号。 在本发明的各种实施例中,增益级,例如增益级,也可以被称为RF处理链。 功率放大器电路可以使得能够基于所生成的多个上变频RF信号在无线通信系统内产生相应的多个RF输出信号。

    Method and apparatus for generating arbitrary phase shift using a phase shifter based on adding two perpendicular vectors with variable gains
    15.
    发明授权
    Method and apparatus for generating arbitrary phase shift using a phase shifter based on adding two perpendicular vectors with variable gains 失效
    基于添加具有可变增益的两个垂直向量,使用移相器产生任意相移的方法和装置

    公开(公告)号:US07333790B2

    公开(公告)日:2008-02-19

    申请号:US11102515

    申请日:2005-04-08

    IPC分类号: H04B1/26

    CPC分类号: H04B7/084 H04B7/10

    摘要: A radio frequency (RF) phase shifter having an RC-CR circuit that includes a first capacitor having a first capacitor node and a second capacitor node and a first resistor coupled between the first capacitor node and a ground. The RC-CR circuit also includes a second resistor having a first resistor node and a second resistor node and a second capacitor coupled between the first resistor node and the ground. The RF phase shifter generates arbitrary phase shift by using a scheme of adding two perpendicular vectors with variable gains (or amplitudes).

    摘要翻译: 一种具有RC-CR电路的射频(RF)移相器,其包括具有第一电容器节点和第二电容器节点的第一电容器和耦合在第一电容器节点和地之间的第一电阻器。 RC-CR电路还包括具有第一电阻器节点和第二电阻器节点的第二电阻器,以及耦合在第一电阻器节点和地之间的第二电容器。 RF移相器通过使用添加具有可变增益(或幅度)的两个垂直向量的方案来产生任意的相移。

    Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer
    16.
    发明授权
    Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer 有权
    通过利用具有单个反馈混频器的数字预失真方案来补偿发射机中的估计失真的方法和系统

    公开(公告)号:US08224250B2

    公开(公告)日:2012-07-17

    申请号:US11618699

    申请日:2006-12-29

    IPC分类号: H04B1/00

    摘要: Aspects of a method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer are presented. Aspects of the system may include at least one circuit that enables generation of an output signal in response to one or more generated input signals. A feedback signal may be generated within a single feedback mixer circuit that may perform a frequency mix-down operation on the generated output signal. The generated feedback signal may be inserted at one or more insertion points in a receiver. Each of the insertion points may be located between a mixer stage of the receiver, and one or more circuits that generate a baseband signal based on the generated feedback signal.

    摘要翻译: 提出了通过利用具有单个反馈混频器的数字预失真方案来补偿发射机中的估计失真的方法和系统的方面。 该系统的方面可以包括响应于一个或多个所生成的输入信号而能够产生输出信号的至少一个电路。 可以在可以对所生成的输出信号执行频率混合运算的单个反馈混频器电路内产生反馈信号。 产生的反馈信号可以插入接收器中的一个或多个插入点。 每个插入点可以位于接收器的混合器级之间,以及基于产生的反馈信号产生基带信号的一个或多个电路。

    LINEARIZED TRANSMITTER INCLUDING A POWER AMPLIFIER
    17.
    发明申请
    LINEARIZED TRANSMITTER INCLUDING A POWER AMPLIFIER 有权
    包括功率放大器的线性变送器

    公开(公告)号:US20110143791A1

    公开(公告)日:2011-06-16

    申请号:US13031331

    申请日:2011-02-21

    IPC分类号: H04W88/00

    摘要: A method and system for wireless communication is provided and may include generating a single analog quadrature signal in a chip including RF transmitters and receivers using a baseband processor, and generating output RF signals based on the quadrature signal in corresponding RF transmitters. The output RF signals may be communicated to the RF receivers via a feedback path including circuitry external to the RF receivers. The dedicated circuitry may include a transmit/receive switch and/or an on-chip or off-chip balun. The quadrature signal may include in-phase and quadrature-phase components. The output RF signal communicated via the feedback path may be down-converted utilizing mixers in the RF receivers and communicated to the baseband processor. Distortion in the quadrature signal may be estimated utilizing the communicated down-converted output RF signals and subsequently generated quadrature signals may be predistorted based on the distortion estimation.

    摘要翻译: 提供了一种用于无线通信的方法和系统,并且可以包括使用基带处理器在包括RF发射机和接收机的芯片中生成单个模拟正交信号,并且基于对应的RF发射机中的正交信号产生输出RF信号。 输出RF信号可以经由包括RF接收器外部电路的反馈路径传送到RF接收器。 专用电路可以包括发送/接收开关和/或片上或片外平衡 - 不平衡转换器。 正交信号可以包括同相和正交相分量。 通过反馈路径传送的输出RF信号可以利用RF接收机中的混频器进行下变频,并传送给基带处理器。 正交信号中的失真可以利用所传送的下变频输出RF信号来估计,随后产生的正交信号可以基于失真估计来预失真。

    METHOD AND APPARATUS FOR GENERATING ARBITRARY PHASE SHIFT USING A PHASE SHIFTER BASED ON ADDING TWO PERPENDICULAR VECTORS WITH VARIABLE GAINS
    18.
    发明申请
    METHOD AND APPARATUS FOR GENERATING ARBITRARY PHASE SHIFT USING A PHASE SHIFTER BASED ON ADDING TWO PERPENDICULAR VECTORS WITH VARIABLE GAINS 有权
    使用基于增加两个可变增益的两个向量矢量的相位变换器产生相位相移的方法和装置

    公开(公告)号:US20080100398A1

    公开(公告)日:2008-05-01

    申请号:US11967759

    申请日:2007-12-31

    IPC分类号: H03H7/18

    CPC分类号: H04B7/084 H04B7/10

    摘要: A radio frequency (RF) phase shifter having an RC-CR circuit that includes a first capacitor having a first capacitor node and a second capacitor node and a first resistor coupled between the first capacitor node and a ground. The RC-CR circuit also includes a second resistor having a first resistor node and a second resistor node and a second capacitor coupled between the first resistor node and the ground. The RF phase shifter generates arbitrary phase shift by using a scheme of adding two perpendicular vectors with variable gains (or amplitudes).

    摘要翻译: 一种具有RC-CR电路的射频(RF)移相器,其包括具有第一电容器节点和第二电容器节点的第一电容器和耦合在第一电容器节点和地之间的第一电阻器。 RC-CR电路还包括具有第一电阻器节点和第二电阻器节点的第二电阻器,以及耦合在第一电阻器节点和地之间的第二电容器。 RF移相器通过使用添加具有可变增益(或幅度)的两个垂直向量的方案来产生任意的相移。

    Current mode phase shifter, mixer and amplifier
    19.
    发明申请
    Current mode phase shifter, mixer and amplifier 有权
    电流模式移相器,混频器和放大器

    公开(公告)号:US20070058703A1

    公开(公告)日:2007-03-15

    申请号:US11224610

    申请日:2005-09-12

    IPC分类号: H04L5/16

    摘要: An integrated circuit radio transceiver includes a phase shift block that is operable to produce a phase shifted current signal at an output of the phase shift block and a mixer with a low input impedance that is operable to produce a phase and frequency shifted output current signal based upon the phase shifted current signal. One aspect of the present invention is that the phase shift block produces an output as a current signal and the mixer block is operably disposed and formed to receive the current signal produced by the phase shift block. Similarly, an operational amplifier configured in a low input impedance mode is provided to receive and amplify a current signal mixer output, all to maximize signal processing head room reduce circuit noise and improve linearity

    摘要翻译: 集成电路无线电收发机包括相移块,其可操作以在相移块的输出处产生相移电流信号,以及具有低输入阻抗的混频器,其可操作以产生基于相位和频移的输出电流信号 相移电流信号。 本发明的一个方面是相移块产生作为电流信号的输出,并且混合器块可操作地设置和形成以接收由相移块产生的电流信号。 类似地,以低输入阻抗模式配置的运算放大器被提供以接收和放大当前信号混合器输出,全部以最大化信号处理头部房间减少电路噪声并提高线性度

    Method and system for using a multi-RF input receiver for diversity selection
    20.
    发明授权
    Method and system for using a multi-RF input receiver for diversity selection 有权
    使用多RF输入接收机进行分集选择的方法和系统

    公开(公告)号:US08594598B2

    公开(公告)日:2013-11-26

    申请号:US13471651

    申请日:2012-05-15

    IPC分类号: H04B17/00 H04B17/02 H04B1/06

    CPC分类号: H04B7/0811

    摘要: A method for processing signals in a receiver includes receiving a plurality of wireless signals via a plurality of M receive antennas coupled to M corresponding signal amplifiers. The method may also include measuring corresponding signal strengths of M signals generated when each of M phase-shifters is coupled to each of the M receive antennas, while one or more of the M signal amplifiers are disabled. One of the M generated signals may be selected for processing without the use of an antenna switch, where the selecting may be based on the measured signal strength. Each of the plurality of received wireless signals may be amplified prior to the measuring. One or both of an in-phase (I) component and/or a quadrature (Q) component may be generated for each of the M generated signals.

    摘要翻译: 用于在接收机中处理信号的方法包括经由耦合到M个相应信号放大器的多个M个接收天线接收多个无线信号。 该方法还可以包括当M个移相器中的每一个耦合到M个接收天线中的每一个时产生的M个信号的相应信号强度,而一个或多个M个信号放大器被禁用。 可以选择M个生成的信号中的一个用于处理而不使用天线开关,其中选择可以基于测量的信号强度。 多个接收的无线信号中的每一个可以在测量之前被放大。 可以为M个生成的信号中的每一个生成同相(I)分量和/或正交(Q)分量中的一个或两个。