公开(公告)号：US20120202562A1

公开(公告)日：2012-08-09

申请号：US13451914

申请日：2012-04-20

申请人： Ahmadreza Rofougaran ,  Arya Behzad

发明人： Ahmadreza Rofougaran ,  Arya Behzad

IPC分类号： H04W88/02 ,  H04M1/00

CPC分类号： H04W88/06 ,  H04W72/1215

摘要： A system and method providing concurrent multimode communication through multimode signal multiplexing. Various aspects of the present invention may comprise, during a first time period, transmitting a first portion of a first communication in a first communication mode in a serial wireless transmission stream. During a second time period after the first time period, a first portion of a second communication may be transmitted in a second communication mode in the serial wireless transmission stream. Also, during a third time period after the second time period, a second portion of the first communication may be transmitted in the first communication mode in the serial wireless transmission stream. In an exemplary scenario, prior to communicating various communications, transmission time may be allocated between the first and second communication modes. In another exemplary scenario, transmission may be switched between a plurality of communication modes in response to detected communication conditions.

摘要翻译： 一种通过多模信号复用提供并发多模通信的系统和方法。 在第一时间段期间，本发明的各个方面可以包括在串行无线传输流中以第一通信模式发送第一通信的第一部分。 在第一时间段之后的第二时间段期间，可以在串行无线传输流中以第二通信模式发送第二通信的第一部分。 此外，在第二时间段之后的第三时间段期间，可以在串行无线传输流中以第一通信模式发送第一通信的第二部分。 在示例性场景中，在传送各种通信之前，可以在第一和第二通信模式之间分配传输时间。 在另一示例性场景中，响应于检测到的通信条件，可以在多个通信模式之间切换传输。

公开(公告)号：US08073080B2

公开(公告)日：2011-12-06

申请号：US11618720

申请日：2006-12-29

申请人： Qiang Li ,  Razieh Roufoogaran ,  Keith Carter ,  Arya Behzad

发明人： Qiang Li ,  Razieh Roufoogaran ,  Keith Carter ,  Arya Behzad

IPC分类号： H03D3/00 ,  H04L27/22

CPC分类号： H03D3/009

摘要： Certain aspects of a method and system for RC-CR quadrature generation with wideband coverage and process compensation may include determining an amplitude mismatch between an in-phase (I) component and a quadrature (Q) component of a signal generated in a radio frequency (RF) transmitter or receiver. A variation in resistance of a quadrature network associated with the I component and Q component may be determined. The determined amplitude mismatch and the determined variation in the resistance of the quadrature network may be compensated by adjusting a resistance of a portion of the quadrature network associated with the I component and a resistance of a portion of the quadrature network associated with the Q component.

摘要翻译： 用于具有宽带覆盖和过程补偿的RC-CR正交生成的方法和系统的某些方面可以包括确定在射频中产生的信号的同相（I）分量和正交（Q）分量之间的幅度失配（ RF）发射机或接收机。 可以确定与I分量和Q分量相关联的正交网络的电阻变化。 确定的幅度失配和确定的正交网络的电阻的变化可以通过调整与I分量相关联的正交网络的一部分的电阻和与Q分量相关联的正交网络的一部分的电阻来补偿。

公开(公告)号：US07868696B2

公开(公告)日：2011-01-11

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： H93G3/10

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：US07856215B2

公开(公告)日：2010-12-21

申请号：US11618808

申请日：2006-12-30

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： Aspects of a method and system for signal processing are disclosed and may include receiving a plurality of wireless signals via a plurality of M receive antennas. Each of M phase shifters coupled to each of the M receive antennas may be set to operate in a bypass mode or with an arbitrary phase setting. Corresponding signal strengths of M signals generated when each of the M phase-shifters is coupled to each of the M receive antennas may be measured, while at least a portion of the M receive antennas are turned off. Selecting one of the M generated signals for processing without the use of an antenna switch, based on the measured signal strength. A signal strength of each of the generated M amplified signals may be measured while turning off at least one of the plurality of M receive antennas and without the use of the phase-shifters.

摘要翻译： 公开了用于信号处理的方法和系统的方面，并且可以包括经由多个M个接收天线接收多个无线信号。 耦合到M个接收天线中的每一个的M个移相器中的每一个可以被设置为以旁路模式或任意相位设置操作。 当M个接收天线的至少一部分被关闭时，可以测量当每个M个移相器耦合到每个M个接收天线时产生的M个信号的相应信号强度。 基于测量的信号强度，选择M个生成的信号之一进行处理而不使用天线开关。 可以在断开多个M个接收天线中的至少一个并且不使用移相器的同时测量所产生的M个放大信号中的每一个的信号强度。

公开(公告)号：US07538610B2

公开(公告)日：2009-05-26

申请号：US11618864

申请日：2006-12-31

申请人： Vikram Magoon ,  Ali Afashi ,  Arya Behzad

发明人： Vikram Magoon ,  Ali Afashi ,  Arya Behzad

IPC分类号： H03G3/20

CPC分类号： H03G3/3042

摘要： Aspects of a method and system for enhancement of power amplifier (PA) efficiency through controlled variation of gain in a power amplifier driver are presented. Aspects of the system may comprise an envelope detector that enables detection of an amplitude of an analog input signal. The envelope detector may enable computation of a first gain value based on the detection. A second gain value may be computed based on the first gain value. A PA may enable generation of an analog output signal based on the analog input signal, the first gain value and the second gain value.

摘要翻译： 提出了通过功率放大器驱动器中的增益控制变化来增强功率放大器（PA）效率的方法和系统的方面。 系统的方面可以包括能够检测模拟输入信号的幅度的包络检测器。 包络检测器可以使得能够基于检测来计算第一增益值。 可以基于第一增益值来计算第二增益值。 PA可以基于模拟输入信号，第一增益值和第二增益值来实现模拟输出信号的产生。

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：US20080157875A1

公开(公告)日：2008-07-03

申请号：US11618152

申请日：2006-12-29

申请人： Arya Behzad ,  Stephen Chi-Wang Au ,  Dandan Li

发明人： Arya Behzad ,  Stephen Chi-Wang Au ,  Dandan Li

IPC分类号： H03F3/04 ,  G05F3/02

CPC分类号： H03F3/04 ,  H03F1/301 ,  H03F3/345 ,  H03F3/45183 ,  H03F2200/462 ,  H03F2200/78 ,  H03F2203/45244 ,  H03F2203/45476

摘要： Aspects of a method and system for precise current matching in deep sub-micron technology may include adjusting a current mirror to compensate for MOSFET gate leakage currents by using feedback circuits. The feedback circuits may be implemented from active components to create active feedback circuits. If the reference current to be mirrored is noisy, a smoothing effect may be achieved by introducing a low-pass filter coupled to the current mirror design. The active feedback may comprise amplifiers, which may comprise one or more amplifier stages. The amplifier may amplify either a bias voltage error or a bias current error. Furthermore, a transimpedance amplifier may be utilized in the feedback loop. The output bias current of the current mirror may be stabilized dynamically during adjusting. Multiple current sources may be utilized in the current mirrors.

摘要翻译： 深亚微米技术中精确电流匹配的方法和系统的方面可能包括调整电流镜以通过使用反馈电路来补偿MOSFET栅极漏电流。 反馈电路可以由有源部件实现以产生有源反馈电路。 如果要镜像的参考电流是嘈杂的，则可以通过引入耦合到当前镜子设计的低通滤波器来实现平滑效果。 有源反馈可以包括放大器，其可以包括一个或多个放大器级。 放大器可能放大偏置电压误差或偏置电流误差。 此外，可以在反馈回路中使用跨阻放大器。 电流镜的输出偏置电流在调节期间可以动态稳定。 电流镜可以使用多个电流源。

公开(公告)号：US20080139154A1

公开(公告)日：2008-06-12

申请号：US11618808

申请日：2006-12-30

申请人： Arya Behzad ,  Ali Afsahi ,  Mark Gonikberg

发明人： Arya Behzad ,  Ali Afsahi ,  Mark Gonikberg

IPC分类号： H04B7/00

CPC分类号： H04B7/0811

摘要： Aspects of a method and system for signal processing are disclosed and may include receiving a plurality of wireless signals via a plurality of M receive antennas. Each of M phase shifters coupled to each of the M receive antennas may be set to operate in a bypass mode or with an arbitrary phase setting. Corresponding signal strengths of M signals generated when each of the M phase-shifters is coupled to each of the M receive antennas may be measured, while at least a portion of the M receive antennas are turned off. Selecting one of the M generated signals for processing without the use of an antenna switch, based on the measured signal strength. A signal strength of each of the generated M amplified signals may be measured while turning off at least one of the plurality of M receive antennas and without the use of the phase-shifters.

摘要翻译： 公开了用于信号处理的方法和系统的方面，并且可以包括经由多个M个接收天线接收多个无线信号。 耦合到M个接收天线中的每一个的M个移相器中的每一个可以被设置为以旁路模式或任意相位设置操作。 当M个接收天线的至少一部分被关闭时，可以测量当每个M个移相器耦合到每个M个接收天线时产生的M个信号的相应信号强度。 基于测量的信号强度，选择M个生成的信号之一进行处理而不使用天线开关。 可以在断开多个M个接收天线中的至少一个并且不使用移相器的同时测量所产生的M个放大信号中的每一个的信号强度。

公开(公告)号：US20080139150A1

公开(公告)日：2008-06-12

申请号：US11618716

申请日：2006-12-29

申请人： Qiang Li ,  Razieh Roufoogaran ,  Arya Behzad ,  Dandan Li ,  Hung-Ming Chien

发明人： Qiang Li ,  Razieh Roufoogaran ,  Arya Behzad ,  Dandan Li ,  Hung-Ming Chien

IPC分类号： H04B1/16

CPC分类号： H04B1/406 ,  H03L7/18 ,  Y02D70/122 ,  Y02D70/124

摘要： Certain aspects of a method and system for mitigating effects of pulling in multiple phase locked loops in multi-standard systems may include selecting an input frequency range of operation at a voltage controlled oscillator based on a particular wireless band of operation in a system that handles a first wireless communication protocol and a second wireless communication protocol. An image rejection mixer may be enabled to generate an output signal for the particular wireless band of operation based on mixing a plurality of received signals within a selected frequency range. An in-phase (I) component and a quadrature (Q) component of the generated output signal may be generated by utilizing a RC-CR quadrature network.

摘要翻译： 用于减轻在多标准系统中拉动多个锁相环的影响的方法和系统的某些方面可包括基于处理一个或多个系统的系统中的特定无线工作频带来选择在压控振荡器处的输入频率范围 第一无线通信协议和第二无线通信协议。 可以使镜像抑制混频器能够基于在所选频率范围内混合多个接收信号来产生用于特定无线操作频带的输出信号。 可以通过利用RC-CR正交网络来产生所产生的输出信号的同相（I）分量和正交（Q）分量。

公开(公告)号：US20080139144A1

公开(公告)日：2008-06-12

申请号：US11618181

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： H03G3/3042 ,  Y02D70/122 ,  Y02D70/124

摘要： Methods and systems for mitigating a voltage standing wave ratio in a transmitter are disclosed and may comprise calibrating an output power of a power amplifier integrated within a chip using a resistor that models an impedance of an antenna that is externally coupled to the amplifier while the antenna is decoupled. The gain and output power of the amplifier may be determined utilizing the known resistance and a voltage that is measured at an input of the power amplifier, or at a number of points prior to the power amplifier. When the antenna may be coupled to the transmitter, the transmitter output power may then be controlled utilizing the voltage measurements prior to the power amplifier to avoid measuring reflected waves in instances when the antenna impedance may vary. The power amplifier may be of a design that comprises reverse isolation to reduce reflected waves from the antenna.

摘要翻译： 公开了用于减轻发射机中的电压驻波比的方法和系统，并且可以包括使用对外部耦合到放大器的天线的阻抗进行建模的电阻来校准集成在芯片内的功率放大器的输出功率，而天线 被解耦。 放大器的增益和输出功率可以利用已知的电阻和在功率放大器的输入处或在功率放大器之前的多个点处测量的电压来确定。 当天线可以耦合到发射机时，可以利用功率放大器之前的电压测量来控制发射机输出功率，以避免在天线阻抗可能变化的情况下测量反射波。 功率放大器可以是包括反向隔离以减少来自天线的反射波的设计。