公开(公告)号：US08391808B2

公开(公告)日：2013-03-05

申请号：US12038996

申请日：2008-02-28

申请人： Mark Gonikberg ,  Luis Gutierrez ,  Colin Fraser ,  Arya Behzad ,  George Varghese

发明人： Mark Gonikberg ,  Luis Gutierrez ,  Colin Fraser ,  Arya Behzad ,  George Varghese

IPC分类号： H04B1/04

CPC分类号： H04L27/2626 ,  H03F1/3241 ,  H04B1/0475 ,  H04B2001/0425

摘要： Aspects of a method and system for estimating and compensating for non-linear distortion in a transmitter using calibration are presented. Aspects of the system may include one more circuits that may enable estimation, within a single IC device, of distortion in output signals generated by a transmitter circuit. The circuitry may enable compensation of the estimated distortion by predistorting subsequent input signals. The transmitter circuit may generate subsequent output signals based on the predistorted subsequent input signals.

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：US08346185B2

公开(公告)日：2013-01-01

申请号：US13304752

申请日：2011-11-28

申请人： Ali Afashi ,  Vikram Magoon ,  Arya Behzad

发明人： Ali Afashi ,  Vikram Magoon ,  Arya Behzad

IPC分类号： H03C1/62 ,  H04B17/00 ,  H04B1/04 ,  H01Q11/12

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：US08274957B2

公开(公告)日：2012-09-25

申请号：US11864339

申请日：2007-09-28

申请人： John Walley ,  Thomas Quigley ,  Alexander G. MacInnis ,  Arya Behzad ,  Jeyhan Karaoguz ,  Mark Buer

发明人： John Walley ,  Thomas Quigley ,  Alexander G. MacInnis ,  Arya Behzad ,  Jeyhan Karaoguz ,  Mark Buer

IPC分类号： H04W4/00

CPC分类号： H04W76/023 ,  H04W76/00 ,  H04W76/14 ,  H04W84/12 ,  H04W84/18

摘要： Wireless mobile communication (WMC) devices located in near proximity of each other may be enabled to form a mesh (ad hoc wireless) network. WMC devices may form and/or tear down intra-mesh connection with other WMC devices in the same mesh network. WMC devices may utilize information related to other WMC devices in the mesh network in determining formation and tearing down of intra-mesh connections. This information may comprise relative speeds, locations, and directions of movement of the WMC devices forming/tearing intra-mesh connections. Other information including data bandwidth and/or power consumption may be utilized in such determination. This information may also comprise available services advertised by WMC devices in the mesh network.

摘要翻译： 可以使位于彼此附近的无线移动通信（WMC）设备形成网状（ad hoc无线）网络。 WMC设备可以形成和/或拆除与同一网状网络中的其他WMC设备的网内连接。 WMC设备可以利用与网状网络中的其他WMC设备相关的信息来确定网内连接的形成和拆除。 该信息可以包括形成/撕裂网内连接的WMC设备的相对速度，位置和移动方向。 包括数据带宽和/或功率消耗在内的其他信息可用于这种确定。 该信息还可以包括由网状网络中的WMC设备发布的可用服务。

公开(公告)号：US08224270B2

公开(公告)日：2012-07-17

申请号：US11618195

申请日：2006-12-29

申请人： Arya Behzad

发明人： Arya Behzad

IPC分类号： H04B1/04

CPC分类号： H03G3/007 ,  H03G3/3042 ,  Y02D70/122 ,  Y02D70/124

摘要： Methods, systems, and machine-readable code for optimizing transmit power of a power amplifier using a Vbat monitor are disclosed and may comprise adjusting the gain of gain stages in a transmit path based on a control signal that is a function of a supply voltage signal, among other variables, derived from a supply voltage that may be used to power a transmit path. The supply voltage signal may be received from a power management unit or derived directly from a battery or other supply. The supply voltage signal may be compared to a reference signal, the result of which may be utilized to generate the control signal. The values for the control signals may be determined over a range of supply voltages and stored in a lookup table.

摘要翻译： 公开了用于使用Vbat监视器来优化功率放大器的发射功率的方法，系统和机器可读代码，并且可以包括基于作为电源电压信号的函数的控制信号调整发射路径中的增益级的增益 ，以及其他变量，源自可用于为发送路径供电的电源电压。 电源电压信号可以从电源管理单元接收或直接从电池或其他电源导出。 电源电压信号可以与参考信号进行比较，参考信号的结果可用于产生控制信号。 控制信号的值可以在电源电压范围内确定并存储在查找表中。

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：US08208879B2

公开(公告)日：2012-06-26

申请号：US12939387

申请日：2010-11-04

申请人： Arya Behzad ,  Ali Afsahi ,  Mark Gonikberg

发明人： Arya Behzad ,  Ali Afsahi ,  Mark Gonikberg

IPC分类号： H04B17/00 ,  H04B17/02 ,  H04B1/06 ,  H04B7/00

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。

公开(公告)号：US20120122518A1

公开(公告)日：2012-05-17

申请号：US13355739

申请日：2012-01-23

申请人： Arya Behzad ,  Ahmadreza Rofougaran

发明人： Arya Behzad ,  Ahmadreza Rofougaran

IPC分类号： H04W88/06

CPC分类号： H04B1/0067 ,  H04B1/005 ,  H04B1/406

摘要： A multimode communication device with a shared signal path programmable filter and a method for utilizing a shared signal path programmable filter in a multimode communication device. Various aspects of the present invention comprise a first module adapted to receive a first communication signal (e.g., corresponding to a first communication protocol) and a second module adapted to receive a second communication signal (e.g., corresponding to a second communication protocol). A shared filter, communicatively coupled to the first and second modules, may be adapted to filter the first and/or second communication signals in accordance with a plurality of selectable sets of filter response characteristics (e.g., associated with the first and second communication protocols). A filter control module may be adapted to select a set of filter response characteristics from a plurality of such sets and program the shared filter to filter a communication signal in accordance with the selected set.

摘要翻译： 一种具有共享信号路径可编程滤波器的多模通信装置和在多模通信装置中利用共享信号路径可编程滤波器的方法。 本发明的各个方面包括适于接收第一通信信号（例如，对应于第一通信协议）的第一模块和适于接收第二通信信号（例如，对应于第二通信协议）的第二模块。 通信地耦合到第一和第二模块的共享滤波器可以适于根据多个可选择的滤波器响应特性集（例如，与第一和第二通信协议相关联）来过滤第一和/或第二通信信号， 。 滤波器控制模块可以适于从多个这样的集合中选择一组滤波器响应特性，并且对共享滤波器进行编程以根据所选择的集合来过滤通信信号。

公开(公告)号：US08175544B2

公开(公告)日：2012-05-08

申请号：US13052572

申请日：2011-03-21

申请人： Arya Behzad ,  Ahmadreza Rofougaran

发明人： Arya Behzad ,  Ahmadreza Rofougaran

IPC分类号： H04B1/40 ,  H04K3/00

CPC分类号： H04B1/28 ,  H04B1/406 ,  H04L27/0002

摘要： A system and method providing variable-frequency IF conversion in a multimode communication device. Various aspects of the present invention provide a multimode communication device comprising at least one RF signal receiver adapted to receive at least a first RF signal corresponding to a first communication protocol and a second RF signal corresponding to a second communication protocol. A controllable frequency source may, for example, be adapted to output a mixing signal characterized by one of a plurality of selectable frequencies. Such selectable frequencies may, for example, comprise a first frequency corresponding to the first communication protocol and a second frequency corresponding to the second communication protocol. A mixer may, for example, receive a received RF signal from the RF signal receiver, receive a mixing signal from the controllable frequency source, and convert the received RF signal to an IF signal utilizing the received mixing signal.

摘要翻译： 一种在多模通信设备中提供可变频率IF转换的系统和方法。 本发明的各个方面提供一种多模式通信设备，其包括至少一个RF信号接收器，适合于接收对应于第一通信协议的至少第一RF信号和对应于第二通信协议的第二RF信号。 可控频率源可以例如适于输出以多个可选频率中的一个为特征的混合信号。 这样的可选频率可以例如包括对应于第一通信协议的第一频率和对应于第二通信协议的第二频率。 混频器可以例如从RF信号接收器接收接收到的RF信号，从可控频率源接收混频信号，并利用接收到的混频信号将接收到的RF信号转换成IF信号。

公开(公告)号：US08036316B2

公开(公告)日：2011-10-11

申请号：US12632184

申请日：2009-12-07

申请人： Arya Behzad ,  Qiang Li ,  Razieh Roufoogaran

发明人： Arya Behzad ,  Qiang Li ,  Razieh Roufoogaran

IPC分类号： H04L25/06

CPC分类号： H04L27/364 ,  H04L27/362

摘要： Certain aspects of a method and system for independent in-phase (I) and quadrature (Q) loop amplitude control for quadrature generators may include determining an amplitude voltage associated with an in-phase (I) component and a quadrature (Q) component of a generated signal. A DC reference voltage associated with the I component and the Q component may be determined. The determined amplitude voltage may be compared with the determined reference voltage to generate a control signal. The amplitude mismatch between the I component and the Q component may be compensated by controlling a biasing current of one or more programmable buffers associated with one or both of the I component and the Q component, based on the generated control signal.

摘要翻译： 用于正交发生器的独立同相（I）和正交（Q）环路幅度控制的方法和系统的某些方面可以包括确定与同相（I）分量和正交（Q）分量的正交（Q）分量相关联的幅度电压 产生的信号。 可以确定与I分量和Q分量相关联的DC参考电压。 可以将确定的振幅电压与所确定的参考电压进行比较以产生控制信号。 可以通过基于所生成的控制信号控制与I分量和Q分量中的一个或两个相关联的一个或多个可编程缓冲器的偏置电流来补偿I分量和Q分量之间的幅度失配。