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    Systems and methods for reducing average current consumption in a local oscillator path
    1.
    发明授权
    Systems and methods for reducing average current consumption in a local oscillator path 有权
    用于降低本地振荡器路径中的平均电流消耗的系统和方法

    公开(公告)号：US08791740B2

    公开(公告)日：2014-07-29

    申请号：US12724337

    申请日：2010-03-15

    申请人： Dongjiang Qiao ,  Bhushan S. Asuri ,  Junxiong Deng ,  Frederic Bossu

    发明人： Dongjiang Qiao ,  Bhushan S. Asuri ,  Junxiong Deng ,  Frederic Bossu

    IPC分类号： H03K3/289

    CPC分类号： H04B1/408 ,  H03B19/00 ,  H03L7/0812 ,  H04B1/109

    摘要： A method for reducing average current consumption in a local oscillator (LO) path is disclosed. An LO signal is received at a master frequency divider and a slave frequency divider. Output from the master frequency divider is mixed with an input signal to produce a first mixed output. Output from the slave frequency divider is mixed with the input signal to produce a second mixed output. The second mixed output is forced to be in phase with the first mixed output.

    摘要翻译： 公开了一种用于降低本地振荡器（LO）路径中的平均电流消耗的方法。 在主分频器和从分频器处接收LO信号。 主分频器的输出与输入信号混合，产生第一个混合输出。 来自从分频器的输出与输入信号混合，产生第二个混合输出。 第二个混合输出被强制与第一个混合输出同相。

    Degenerated passive mixer in saw-less receiver
    2.
    发明授权
    Degenerated passive mixer in saw-less receiver 有权
    简易无源混频器在无锯齿接收机中

    公开(公告)号：US07899426B2

    公开(公告)日：2011-03-01

    申请号：US11936305

    申请日：2007-11-07

    申请人： Aleksandar Tasic ,  Junxiong Deng ,  Namsoo Kim

    发明人： Aleksandar Tasic ,  Junxiong Deng ,  Namsoo Kim

    IPC分类号： H04B7/00 ,  H04B1/16

    CPC分类号： H04B1/18 ,  H04B1/30

    摘要： In a SAW-less receiver involving a passive mixer, novel degenerative impedance elements having substantial impedances are disposed in incoming signal paths between the differential signal output leads of a low-noise amplifier (LNA) and the differential signal input leads of the passive mixer. The passive mixer outputs signals to a transimpedance amplifier and baseband filter (TIA). Providing the novel degenerative impedance elements decreases noise in the overall receiver as output from the TIA, with only minimal degradation of other receiver performance characteristics. In some examples, the passive mixer receives local oscillator signals having duty cycles of substantially less than fifty percent. In some examples, the degenerative impedance elements can have one of several impedances.

    摘要翻译： 在涉及无源混频器的无SAW接收机中，具有实质阻抗的新型退化阻抗元件设置在低噪声放大器（LNA）的差分信号输出引线与无源混频器的差分信号输入引线之间的输入信号路径中。 无源混频器将信号输出到跨阻抗放大器和基带滤波器（TIA）。 提供新颖的退化阻抗元件降低了总体接收机中的噪声，作为TIA的输出，只有其他接收机性能特性的降低最小。 在一些示例中，无源混频器接收具有基本上小于百分之五十的占空比的本地振荡器信号。 在一些示例中，退化阻抗元件可以具有几个阻抗之一。

    METHOD AND APPARATUS FOR REDUCING INTERMODULATION DISTORTION IN AN ELECTRONIC DEVICE HAVING AN AMPLIFIER CIRCUIT
    3.
    发明申请
    METHOD AND APPARATUS FOR REDUCING INTERMODULATION DISTORTION IN AN ELECTRONIC DEVICE HAVING AN AMPLIFIER CIRCUIT 有权
    用于减小具有放大器电路的电子设备中的互调失真的方法和装置

    公开(公告)号：US20090189691A1

    公开(公告)日：2009-07-30

    申请号：US12021061

    申请日：2008-01-28

    申请人： Junxiong Deng ,  Li Liu ,  Prasad S. Gudem

    发明人： Junxiong Deng ,  Li Liu ,  Prasad S. Gudem

    IPC分类号： H03F1/26

    CPC分类号： H03F3/193 ,  H03F1/223 ,  H03F1/3205 ,  H03F1/34 ,  H03F2200/294 ,  H03F2201/3206

    摘要： An electronic device includes an amplifier circuit coupled to a linearizer. The amplifier circuit may receive a first input signal including first and second frequencies and generate a first output signal including a delta frequency signal at a delta frequency, which is the difference between the first frequency and the second frequency. The linearizer includes a signal detector circuit, a current-mirror circuit, a low pass filter, a phase shifter, and a bias circuit. The signal detector circuit may generate a second output signal. The current-mirror circuit may adjust an amplitude of a signal. The low pass filter may eliminate a portion of the second output signal having frequencies greater than the delta frequency. The phase shifter may generate a feedback signal corresponding to the delta frequency signal. An amplitude and/or a phase of the feedback signal is different from an amplitude and/or a phase of the delta frequency signal.

    摘要翻译： 电子设备包括耦合到线性化器的放大器电路。 放大器电路可以接收包括第一和第二频率的第一输入信号，并产生第一输出信号，该第一输出信号包括第一频率和第二频率之间的差异的增量频率的增量频率信号。 线性化器包括信号检测器电路，电流镜电路，低通滤波器，移相器和偏置电路。 信号检测器电路可以产生第二输出信号。 电流镜电路可以调节信号的幅度。 低通滤波器可以消除具有大于Δ频率的频率的第二输出信号的一部分。 移相器可以产生对应于Δ频率信号的反馈信号。 反馈信号的幅度和/或相位与增量频率信号的振幅和/或相位不同。

    Reduced power-consumption receivers
    4.
    发明授权
    Reduced power-consumption receivers 失效
    降低功耗的接收机

    公开(公告)号：US08639205B2

    公开(公告)日：2014-01-28

    申请号：US12052657

    申请日：2008-03-20

    申请人： Junxiong Deng ,  Aristotele Hadjichristos ,  Aleksandar Tasic ,  Frederic Bossu

    发明人： Junxiong Deng ,  Aristotele Hadjichristos ,  Aleksandar Tasic ,  Frederic Bossu

    IPC分类号： H04B1/26

    CPC分类号： H04W52/0206 ,  H03G3/20 ,  H04B1/16

    摘要： An exemplary embodiment disclosed comprises a mixer having a plurality of input leads; a first degenerative impedance element coupled to a first input lead of the mixer; a second degenerative impedance element coupled to a second input lead of the mixer; and a local oscillator (LO) system comprising a plurality of duty cycle modes to generate a LO signal for the mixer, the local oscillator system operates in a first duty cycle based on a first gain state of the mixer, and in a second duty cycle based on a second gain state of the mixer.

    摘要翻译： 公开的示例性实施例包括具有多个输入引线的混合器; 耦合到混合器的第一输入引线的第一退化阻抗元件; 耦合到混合器的第二输入引线的第二退化阻抗元件; 以及本地振荡器（LO）系统，其包括多个占空比模式以产生混频器的LO信号，本地振荡器系统基于混频器的第一增益状态在第一占空比中工作，并且在第二占空比 基于混频器的第二增益状态。

    Harmonic suppression and/or rejection
    6.
    发明授权
    Harmonic suppression and/or rejection 有权
    谐波抑制和/或拒绝

    公开(公告)号：US08422975B2

    公开(公告)日：2013-04-16

    申请号：US12797454

    申请日：2010-06-09

    申请人： Manas Behera ,  Junxiong Deng

    发明人： Manas Behera ,  Junxiong Deng

    IPC分类号： H04B1/10 ,  H04B1/04

    CPC分类号： H03D7/18 ,  H03D7/165

    摘要： Disclosed are circuits, techniques and methods for removing one or more harmonics from a waveform that has been mixed with a local oscillator. In one particular example, such a waveform may also be mixed with a second local oscillator at a different frequency and combined with the first mixed waveform to suppress and/or substantially remove the one or more harmonics.

    摘要翻译： 公开了用于从已经与本地振荡器混合的波形中去除一个或多个谐波的电路，技术和方法。 在一个特定示例中，这样的波形也可以以不同的频率与第二本地振荡器混合，并与第一混合波形组合以抑制和/或基本上去除一个或多个谐波。

    Dual band radio frequency transmitter
    8.
    发明授权
    Dual band radio frequency transmitter 有权
    双频射频发射机

    公开(公告)号：US08095082B2

    公开(公告)日：2012-01-10

    申请号：US11870365

    申请日：2007-10-10

    申请人： Junxiong Deng ,  Maulin Pareshbhai Bhagat ,  Gurkanwal Singh Sahota

    发明人： Junxiong Deng ,  Maulin Pareshbhai Bhagat ,  Gurkanwal Singh Sahota

    IPC分类号： H04B1/02 ,  H04B1/04 ,  H01Q11/12

    CPC分类号： H04B1/0067 ,  H04B1/0458 ,  H04B1/0483

    摘要： A transmitter includes a transformer and a transformer tuning circuit. The transformer transforms a differential radio frequency (RF) signal to a single-ended RF signal. The transformer tuning circuit tunes the transformer to permit the transmitter to transmit the single-ended RF signal in a first frequency band (e.g., cellular frequency band) or a second frequency band (e.g., PCS frequency band).

    摘要翻译： 变送器包括变压器和变压器调谐电路。 变压器将差分射频（RF）信号转换为单端RF信号。 变压器调谐电路调谐变压器以允许发射机在第一频带（例如，蜂窝频带）或第二频带（例如，PCS频带）中发送单端RF信号。

    MULTI-MODE LOW NOISE AMPLIFIER WITH TRANSFORMER SOURCE DEGENERATION
    9.
    发明申请
    MULTI-MODE LOW NOISE AMPLIFIER WITH TRANSFORMER SOURCE DEGENERATION 有权
    具有变压器源变形的多模低噪声放大器

    公开(公告)号：US20110018635A1

    公开(公告)日：2011-01-27

    申请号：US12565526

    申请日：2009-09-23

    申请人： Aleksandar Tasic ,  Junxiong Deng ,  Zhang Jin

    发明人： Aleksandar Tasic ,  Junxiong Deng ,  Zhang Jin

    IPC分类号： H03F3/16

    CPC分类号： H03F1/3205 ,  H03F1/223 ,  H03F3/193 ,  H03F3/45179 ,  H03F3/68 ,  H03F2200/492

    摘要： A multi-mode low noise amplifier (LNA) with transformer source degeneration is described. In an exemplary design, the multi-mode LNA includes first, second, and third transistors and first and second inductors. The first transistor has its source coupled to the first inductor, amplifies an input signal, and provides a first amplified signal in a first mode. The second transistor has its source coupled to the second inductor, amplifies the input signal, and provides a second amplified signal in a second mode. The third transistor has its source coupled to the second inductor. The first and third transistors receive the input signal and conduct current through the first and second inductors, respectively, in a third mode. The first transistor observes source degeneration from a transformer formed by the first and second inductors, amplifies the input signal, and provides a third amplified signal in the third mode.

    摘要翻译： 描述了具有变压器源变性的多模低噪声放大器（LNA）。 在示例性设计中，多模LNA包括第一，第二和第三晶体管以及第一和第二电感器。 第一晶体管的源极耦合到第一电感器，放大输入信号，并以第一模式提供第一放大信号。 第二晶体管的源极耦合到第二电感器，放大输入信号，并以第二模式提供第二放大信号。 第三晶体管的源极耦合到第二电感器。 第一和第三晶体管以第三模式分别接收输入信号并且分别通过第一和第二电感器传导电流。 第一晶体管观察由第一和第二电感器形成的变压器的源极退化，放大输入信号，并在第三模式中提供第三放大信号。