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。

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。

公开(公告)号：US20120236912A1

公开(公告)日：2012-09-20

申请号：US13484474

申请日：2012-05-31

申请人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon ,  Mark Gonikberg ,  George Varghese ,  Guruprasad Revanna

发明人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon ,  Mark Gonikberg ,  George Varghese ,  Guruprasad Revanna

IPC分类号： H04B1/44

CPC分类号： H03F1/3247 ,  H03F1/3294 ,  H03F2200/336 ,  H03F2200/451 ,  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 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。

公开(公告)号：US07492223B2

公开(公告)日：2009-02-17

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： H03G3/20

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。

公开(公告)号：US20080137773A1

公开(公告)日：2008-06-12

申请号：US11618871

申请日：2006-12-31

申请人： Ali Afsahi ,  Vikram Magoon ,  Arya Behzad

发明人： Ali Afsahi ,  Vikram Magoon ,  Arya Behzad

IPC分类号： H04L27/04

CPC分类号： H03G3/3042 ,  H03F1/0277 ,  H03F3/211 ,  H03F3/45188 ,  H03F3/72 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2203/21145 ,  H03F2203/45396 ,  H03F2203/45481 ,  H03F2203/45638 ,  H03F2203/7236

摘要： Aspects of a method and system for enhancing efficiency by modulating power amplifier (PA) gain are presented. Aspects of the system may comprise a PA gain modulator that enables modification of an amplitude of a digital baseband signal. A baseband processor may enable computation of a first gain value based on the modification. The baseband processor may enable computation of a second gain value based on the first gain value. A PA may enable generation of an RF output signal based on the modified digital baseband signal and the second gain value.

摘要翻译： 提出了通过调制功率放大器（PA）增益来提高效率的方法和系统的方面。 系统的方面可以包括能够修改数字基带信号的幅度的PA增益调制器。 基带处理器可以使得能够基于修改来计算第一增益值。 基带处理器可以使得能够基于第一增益值来计算第二增益值。 PA可以基于修改的数字基带信号和第二增益值来实现RF输出信号的产生。

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。

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。

公开(公告)号：US08369798B2

公开(公告)日：2013-02-05

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： H04B1/40

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。

公开(公告)号：US08219032B2

公开(公告)日：2012-07-10

申请号：US11618876

申请日：2006-12-31

申请人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon ,  Mark Gonikberg ,  George Varghese ,  Guruprasad Revanna

发明人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon ,  Mark Gonikberg ,  George Varghese ,  Guruprasad Revanna

IPC分类号： H04B1/00

CPC分类号： H03F1/3247 ,  H03F1/3294 ,  H03F2200/336 ,  H03F2200/451 ,  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 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。

公开(公告)号：US07894780B2

公开(公告)日：2011-02-22

申请号：US11762573

申请日：2007-06-13

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： H04B1/02 ,  H01Q11/12

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

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。