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    METHOD AND SYSTEM FOR CLOSED LOOP POWER CONTROL IN WIRELESS SYSTEMS
    3.
    发明申请
    METHOD AND SYSTEM FOR CLOSED LOOP POWER CONTROL IN WIRELESS SYSTEMS 有权
    无线系统闭环控制的方法与系统

    公开(公告)号：US20090264091A1

    公开(公告)日：2009-10-22

    申请号：US12351733

    申请日：2009-01-09

    申请人： Henrik Jensen ,  Philippe Riondet ,  Eric Raith ,  Hooman Darabi ,  Paul Lettieri ,  Louie Serrano

    发明人： Henrik Jensen ,  Philippe Riondet ,  Eric Raith ,  Hooman Darabi ,  Paul Lettieri ,  Louie Serrano

    IPC分类号： H04B1/06 ,  H04B1/10

    CPC分类号： H03G3/3047 ,  H04B2001/0416

    摘要： Aspects of a method and system for closed loop power control in wireless systems are provided. In this regard, an output power of an amplifier may be measured and an indication of the measured power may be compared to a reference signal. The results of the comparison are utilized to generate an error correction factor. The gain of a preamplifier may be adjusted utilizing the error correction factor, where the output of the preamplifier may be input to the amplifier. The error correction factor may be generated via a proportional integral derivative controller. The gain of the preamplifier may be adjusted via at least one control signal, where the at least one control signal may be generated based on a reference control word and the error correction factor. The indication of the measured power and the reference signal may be time aligned.

    摘要翻译： 提供了无线系统中闭环功率控制方法和系统的方面。 在这方面，可以测量放大器的输出功率，并将测量的功率的指示与参考信号进行比较。 比较结果用于产生误差校正系数。 可以使用误差校正因子调整前置放大器的增益，其中前置放大器的输出可以被输入到放大器。 误差校正因子可以通过比例积分微分控制器产生。 可以经由至少一个控制信号调整前置放大器的增益，其中可以基于参考控制字和误差校正因子来生成至少一个控制信号。 测量功率和参考信号的指示可以是时间对准的。

    Method and system for closed loop power control in wireless systems
    4.
    发明授权
    Method and system for closed loop power control in wireless systems 有权
    无线系统中闭环功率控制的方法和系统

    公开(公告)号：US08280324B2

    公开(公告)日：2012-10-02

    申请号：US12351733

    申请日：2009-01-09

    申请人： Henrik Jensen ,  Philippe Riondet ,  Eric Raith ,  Hooman Darabi ,  Paul Lettieri ,  Louie Serrano

    发明人： Henrik Jensen ,  Philippe Riondet ,  Eric Raith ,  Hooman Darabi ,  Paul Lettieri ,  Louie Serrano

    IPC分类号： H01Q11/12

    CPC分类号： H03G3/3047 ,  H04B2001/0416

    摘要： Aspects of a method and system for closed loop power control in wireless systems are provided. In this regard, an output power of an amplifier may be measured and an indication of the measured power may be compared to a reference signal. The results of the comparison are utilized to generate an error correction factor. The gain of a preamplifier may be adjusted utilizing the error correction factor, where the output of the preamplifier may be input to the amplifier. The error correction factor may be generated via a proportional integral derivative controller. The gain of the preamplifier may be adjusted via at least one control signal, where the at least one control signal may be generated based on a reference control word and the error correction factor. The indication of the measured power and the reference signal may be time aligned.

    摘要翻译： 提供了无线系统中闭环功率控制方法和系统的方面。 在这方面，可以测量放大器的输出功率，并将测量的功率的指示与参考信号进行比较。 比较结果用于产生误差校正系数。 可以使用误差校正因子调整前置放大器的增益，其中前置放大器的输出可以被输入到放大器。 误差校正因子可以通过比例积分微分控制器产生。 可以经由至少一个控制信号调整前置放大器的增益，其中可以基于参考控制字和误差校正因子来生成至少一个控制信号。 测量功率和参考信号的指示可以是时间对准的。

    Nullification of transmitter noise at receive signal frequency
    6.
    发明授权
    Nullification of transmitter noise at receive signal frequency 有权

    公开(公告)号：US09071317B2

    公开(公告)日：2015-06-30

    申请号：US11825415

    申请日：2007-07-06

    申请人： Ahmad Mirzaei ,  Hooman Darabi

    发明人： Ahmad Mirzaei ,  Hooman Darabi

    IPC分类号： H04L27/00 ,  H04B1/10

    CPC分类号： H04B1/1036

    摘要： According to one exemplary embodiment, a transceiver for nullification of a noise component in a transmitter comprises a noise nullification module loading a selected node in the transmitter. The noise nullification module comprises a mixer that receives inputs from the selected node and a local oscillator, where the mixer is also coupled to a filter such that the noise nullification module presents a low impedance at an approximate frequency of a noise component so as to nullify the noise component. In one embodiment, the noise nullification module results in band-pass filtering of an approximate receive signal frequency so as to nullify a noise component at the receive frequency. In another embodiment, the noise nullification module results in notch filtering of an approximate transmit signal frequency so as to nullify a noise component at a receive signal frequency.

    Highly linear and very low-noise down-conversion mixer for extracting weak signals in the presence of very strong unwanted signals
    7.
    发明授权
    Highly linear and very low-noise down-conversion mixer for extracting weak signals in the presence of very strong unwanted signals 有权
    高线性和非常低噪声的下变频混频器，用于在存在非常强的无用信号的情况下提取弱信号

    公开(公告)号：US08761696B2

    公开(公告)日：2014-06-24

    申请号：US12909472

    申请日：2010-10-21

    申请人： Ahmad Mirzaei ,  Hooman Darabi

    发明人： Ahmad Mirzaei ,  Hooman Darabi

    IPC分类号： H04B1/06 ,  H03C1/62

    CPC分类号： G01F1/32 ,  H04B1/525

    摘要： A method and system for wireless communication is provided and may include mitigating blocker signals in transmitted RF signals in a wireless device including a transmitter front end. The mitigation may include up-converting a baseband signal, mixing the up-converted baseband signal with a feedback signal, and amplifying the mixed up-converted baseband signal and the feedback signal to generate an output signal. The feedback signal may be generated by down-converting the output signal, low-pass filtering the down-converted output signal, and up-converting the filtered down-converted signal for the summing. The blocker signals may correspond to receive frequencies for the wireless device and may be converted to DC via the down-converting. The wireless devices may operate in accordance with at least a CDMA standard. The mixed up-converted baseband signal and the feedback signal may be amplified utilizing a source follower amplifier, where the gain and/or linearity may be configured by varying coupling capacitors.

    摘要翻译： 提供了一种用于无线通信的方法和系统，并且可以包括在包括发射机前端的无线设备中的发射的RF信号中减轻阻塞信号。 缓解可以包括对基带信号进行上变频，将上变换的基带信号与反馈信号混合，以及放大混合上变换的基带信号和反馈信号以产生输出信号。 反馈信号可以通过对输出信号进行下变频，低通滤波下变频输出信号，以及对滤波的下变频信号进行加法转换来产生。 阻塞信号可以对应于无线设备的接收频率，并且可以经由下变频转换为DC。 无线设备可以根据至少CDMA标准进行操作。 混合上变频的基带信号和反馈信号可以利用源极跟随器放大器来放大，其中增益和/或线性可以通过改变耦合电容器来配置。

    Discrete digital receiver with FTBPF
    8.
    发明授权
    Discrete digital receiver with FTBPF 有权
    具有FTBPF的离散数字接收机

    公开(公告)号：US08737535B2

    公开(公告)日：2014-05-27

    申请号：US13248634

    申请日：2011-09-29

    申请人： Ahmadreza (Reza) Rofougaran ,  Hooman Darabi

    发明人： Ahmadreza (Reza) Rofougaran ,  Hooman Darabi

    IPC分类号： H04L27/00

    CPC分类号： H04B1/001 ,  H03H19/00 ,  H03H2015/007 ,  H04B1/0028

    摘要： A receiver includes an antenna interface, a frequency translation bandpass filter (FTBPF), a sample and hold module, and a down conversion module. The antenna interface is operable to receive a received wireless signal from an antenna structure and to isolate the received wireless signal from another wireless signal. The FTBPF is operable to filter the received wireless signal to produce an inbound wireless signal. The sample and hold module is operable to sample and hold the inbound wireless signal in accordance with an S&H clock signal to produce a frequency domain sample pulse train. The down conversion module is operable to convert the frequency domain sample pulse train into an inbound baseband signal.

    摘要翻译： 接收机包括天线接口，频率转换带通滤波器（FTBPF），采样保持模块和下变频模块。 天线接口可操作以从天线结构接收接收到的无线信号，并将接收的无线信号与另一无线信号分离。 FTBPF可操作以对接收的无线信号进行滤波以产生入站无线信号。 采样和保持模块可操作以根据S＆H时钟信号采样和保持入站无线信号，以产生频域采样脉冲串。 下变频模块可操作以将频域采样脉冲串转换成入站基带信号。

    Method and Apparatus for Adaptive Cancellation of Distortion and Phase Noise
    9.
    发明申请
    Method and Apparatus for Adaptive Cancellation of Distortion and Phase Noise 有权
    用于自适应消除失真和相位噪声的方法和装置

    公开(公告)号：US20130303103A1

    公开(公告)日：2013-11-14

    申请号：US13470123

    申请日：2012-05-11

    申请人： Mohyee Mikhemar ,  Hooman Darabi

    发明人： Mohyee Mikhemar ,  Hooman Darabi

    IPC分类号： H04B1/10 ,  G06G7/12

    CPC分类号： H04B1/123

    摘要： An adaptive cancellation circuit and method are provided. The circuit includes a main path and an auxiliary path. The main path includes a first amplifier configured to output a first amplified signal to a first mixer. The main path is configured to output a first signal comprising a wanted signal component and a distortion component. The auxiliary path includes a second amplifier configured to output a second amplified signal to a second mixer. The second mixer is connected to a filter configured to remove the wanted signal component. The auxiliary path is configured to output a second signal including the distortion component.

    摘要翻译： 提供自适应消除电路和方法。 电路包括主路径和辅助路径。 主路径包括被配置为将第一放大信号输出到第一混频器的第一放大器。 主路径被配置为输出包括有用信号分量和失真分量的第一信号。 辅助路径包括被配置为将第二放大信号输出到第二混频器的第二放大器。 第二混频器连接到配置成去除所需信号分量的滤波器。 辅助路径被配置为输出包括失真分量的第二信号。

    Portable computing device with high-speed data communication
    10.
    发明授权
    Portable computing device with high-speed data communication 有权
    具有高速数据通信的便携式计算设备

    公开(公告)号：US08483617B2

    公开(公告)日：2013-07-09

    申请号：US13336724

    申请日：2011-12-23

    申请人： Ahmadreza (Reza) Rofougaran ,  Maryam Rofougaran ,  Brima B. Ibrahim ,  Hooman Darabi

    发明人： Ahmadreza (Reza) Rofougaran ,  Maryam Rofougaran ,  Brima B. Ibrahim ,  Hooman Darabi

    IPC分类号： H04B15/00 ,  H04M1/00

    CPC分类号： H04B15/00 ,  G06F1/1626 ,  G06F1/1643 ,  G06F1/1698 ,  G06F3/017 ,  H04B7/15507

    摘要： A portable computing device includes a radio frequency (RF) wired link, a core module, and a plurality of multi-mode RF units. When one or more of the multi-mode RF units are supporting a high-speed data communication, the core module is operable to detect a blocker that is adversely affecting the high-speed data communication. The core module is further operable to determine whether a radiation pattern alternative for the high-speed data communication will reduce the adverse affects on the high-speed data communication. When the radiation pattern alternative for the high-speed data communication will reduce the adverse affects on the high-speed data communication, the core module is further operable to enable the radiation pattern alternative. The one or more multi-mode RF units are operable to adjust at least one of transmission and reception of the high-speed data communication in accordance with the radiation pattern alternative.

    摘要翻译： 便携式计算设备包括射频（RF）有线链路，核心模块和多个多模RF单元。 当一个或多个多模RF单元支持高速数据通信时，核心模块可操作以检测对高速数据通信有不利影响的阻塞器。 核心模块还可操作以确定用于高速数据通信的辐射模式替代方案是否将减少对高速数据通信的不利影响。 当用于高速数据通信的辐射模式替代方案将减少对高速数据通信的不利影响时，核心模块进一步可操作以使辐射模式可选。 所述一个或多个多模式RF单元可操作以根据所述辐射模式替代来调整所述高速数据通信的发送和接收中的至少一个。