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31 条记录 (耗时 0.017 秒)

    Method and System for Compensating for Estimated Distortion in a Transmitter By Utilizing a Digital Predistortion Scheme With a Single Feedback Mixer
    3.
    发明申请
    Method and System for Compensating for Estimated Distortion in a Transmitter By Utilizing a Digital Predistortion Scheme With a Single Feedback Mixer 有权
    使用单反馈混频器利用数字预失真方案补偿发射机估计失真的方法和系统

    公开(公告)号：US20080137772A1

    公开(公告)日：2008-06-12

    申请号：US11618699

    申请日：2006-12-29

    申请人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon

    发明人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon

    IPC分类号： H04L25/03

    CPC分类号： H03F1/3247 ,  H03F1/3294 ,  H03F2200/336 ,  H03F2200/57 ,  H04L27/368

    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。

    Method and System for a Highly Efficient Power Amplifier Utilizing Dynamic Biasing and Predistortion
    4.
    发明申请
    Method and System for a Highly Efficient Power Amplifier Utilizing Dynamic Biasing and Predistortion 失效
    使用动态偏置和预失真的高效功率放大器的方法和系统

    公开(公告)号：US20080136526A1

    公开(公告)日：2008-06-12

    申请号：US11618877

    申请日：2006-12-31

    申请人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon

    发明人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon

    IPC分类号： H03F3/04

    CPC分类号： H03F1/3247 ,  H03F1/3211 ,  H03F1/3241 ,  H03F1/3294 ,  H03F3/45188 ,  H03F2200/102 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2203/45112 ,  H03F2203/45244 ,  H03F2203/45292 ,  H03F2203/45554 ,  H04B2001/0425

    摘要： Aspects of a method and system for a highly efficient power amplifier (PA) utilizing dynamic biasing and predistortion are presented. Aspects of the system may include a processor that enables computation of a value of a variable bias component of a bias current based on a bias slope value and an amplitude of an envelope input signal. The processor may enable computation of a value of the bias current based on the selected constant bias current component value and the variable bias current component value. A PA may enable generation of an output signal in response to a generated baseband signal by utilizing the bias current to amplify an amplifier input signal. The bias current may be generated based on the envelope input signal. A feedback signal may be generated based on the output signal, which may be used to predistort a subsequent baseband signal.

    摘要翻译： 提出了一种利用动态偏置和预失真的高效功率放大器（PA）的方法和系统。 该系统的方面可以包括能够基于偏置斜率值和包络输入信号的幅度来计算偏置电流的可变偏置分量的值的处理器。 该处理器可以使得能够基于所选择的恒定偏置电流分量值和可变偏置电流分量值来计算偏置电流的值。 PA可以通过利用偏置电流来放大放大器输入信号，从而能够响应于产生的基带信号而产生输出信号。 可以基于包络输入信号产生偏置电流。 可以基于输出信号来生成反馈信号，该输出信号可以用于对随后的基带信号进行预失真。

    Laser driver circuit
    5.
    发明申请
    Laser driver circuit 审中-公开
    激光驱动电路

    公开(公告)号：US20050041706A1

    公开(公告)日：2005-02-24

    申请号：US10645143

    申请日：2003-08-20

    申请人： Vikram Magoon

    发明人： Vikram Magoon

    IPC分类号： H01S5/042 ,  H04B10/155 ,  H01S3/00

    CPC分类号： H04B10/508 ,  H04B10/503

    摘要： Disclosed are a device, system and method for controlling a duty cycle of a pulse data signal. A pulse data output signal may be generated in response to an input signal where the pulse data output signal comprises a duty cycle. The duty cycle of the pulse data output signal may be adjusted based, at least in part, upon an approximation of the average power of the pulse data output signal.

    摘要翻译： 公开了一种用于控制脉冲数据信号的占空比的装置，系统和方法。 可以响应于脉冲数据输出信号包括占空比的输入信号产生脉冲数据输出信号。 可以至少部分地根据脉冲数据输出信号的平均功率的近似来调整脉冲数据输出信号的占空比。

    Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer
    6.
    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

    申请人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon

    发明人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon

    IPC分类号： H04B1/00

    CPC分类号： H03F1/3247 ,  H03F1/3294 ,  H03F2200/336 ,  H03F2200/57 ,  H04L27/368

    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
    9.
    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

    申请人： Meng-An Pan ,  Ali Afsahi ,  Vikram Magoon ,  Arya Behzad

    发明人： Meng-An Pan ,  Ali Afsahi ,  Vikram Magoon ,  Arya Behzad

    IPC分类号： H04W88/00

    CPC分类号： H04B1/02 ,  H03F1/32 ,  H03F3/24 ,  H03F2200/168 ,  H03F2200/321 ,  H03F2200/336 ,  H04B1/005 ,  H04B2001/0408

    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 SYSTEM FOR A HIGHLY EFFICIENT POWER AMPLIFIER UTILIZING DYNAMIC BAISING AND PREDISTORTION
    10.
    发明申请
    METHOD AND SYSTEM FOR A HIGHLY EFFICIENT POWER AMPLIFIER UTILIZING DYNAMIC BAISING AND PREDISTORTION 有权
    利用动态扫描和预测的高效功率放大器的方法和系统

    公开(公告)号：US20100164629A1

    公开(公告)日：2010-07-01

    申请号：US12724182

    申请日：2010-03-15

    申请人： Arya Behzad ,  Ali Afashi ,  Vikram Magoon

    发明人： Arya Behzad ,  Ali Afashi ,  Vikram Magoon

    IPC分类号： H03F3/04

    CPC分类号： H03F1/3247 ,  H03F1/3211 ,  H03F1/3241 ,  H03F1/3294 ,  H03F3/45188 ,  H03F2200/102 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2203/45112 ,  H03F2203/45244 ,  H03F2203/45292 ,  H03F2203/45554 ,  H04B2001/0425

    摘要： Aspects of a method and system for a highly efficient power amplifier (PA) utilizing dynamic biasing and predistortion are presented. Aspects of the system may include a processor that enables computation of a value of a variable bias component of a bias current based on a bias slope value and an amplitude of an envelope input signal. The processor may enable computation of a value of the bias current based on the selected constant bias current component value and the variable bias current component value. A PA may enable generation of an output signal in response to a generated baseband signal by utilizing the bias current to amplify an amplifier input signal. The bias current may be generated based on the envelope input signal. A feedback signal may be generated based on the output signal, which may be used to predistort a subsequent baseband signal.

    摘要翻译： 提出了一种利用动态偏置和预失真的高效功率放大器（PA）的方法和系统。 该系统的方面可以包括能够基于偏置斜率值和包络输入信号的幅度来计算偏置电流的可变偏置分量的值的处理器。 该处理器可以使得能够基于所选择的恒定偏置电流分量值和可变偏置电流分量值来计算偏置电流的值。 PA可以通过利用偏置电流来放大放大器输入信号，从而能够响应于产生的基带信号而产生输出信号。 可以基于包络输入信号产生偏置电流。 可以基于输出信号来生成反馈信号，该输出信号可以用于对随后的基带信号进行预失真。