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    Method for reducing second order distortion in harmonic rejection mixer
    3.
    发明授权
    Method for reducing second order distortion in harmonic rejection mixer 有权
    减少谐波抑制混频器二阶失真的方法

    公开(公告)号：US09325358B2

    公开(公告)日：2016-04-26

    申请号：US14300574

    申请日：2014-06-10

    申请人： IMEC ,  Renesas Electronics Corporation

    发明人： Sungwoo Cha ,  Jonathan Borremans

    IPC分类号： H04B1/00 ,  H04B1/10 ,  H03D7/14 ,  H04B1/30

    CPC分类号： H04B1/10 ,  H03D7/14 ,  H04B1/30

    摘要： The present disclosure relates to a method for reducing second order intermodulation distortion in a harmonic rejection mixer arranged for down-converting a radio frequency signal to an in-phase and a quadrature baseband signal. The method includes adjusting an output current of a first mixer, to reduce the second order intermodulation distortion in the quadrature baseband signal to a first value, and adjusting an output current of a second mixer, to reduce the second order intermodulation distortion in the in-phase baseband signal to a second value.

    摘要翻译： 本公开涉及一种用于减少谐波抑制混频器中的二阶互调失真的方法，该谐波抑制混频器被布置为将射频信号下变频为同相和正交基带信号。 该方法包括：调整第一混频器的输出电流，将正交基带信号中的二阶互调失真减小到第一值，并调整第二混频器的输出电流，以减小第二混频器的二阶互调失真， 相位基带信号变为第二值。

    Equalization of third-order intermodulation products in wideband direct conversion receiver
    7.
    发明授权
    Equalization of third-order intermodulation products in wideband direct conversion receiver 有权
    宽带直接转换接收机中三阶互调产物的均衡

    公开(公告)号：US08290449B2

    公开(公告)日：2012-10-16

    申请号：US12233314

    申请日：2008-09-18

    申请人： Edward Keehr ,  Seyed Ali Hajimiri

    发明人： Edward Keehr ,  Seyed Ali Hajimiri

    IPC分类号： H04B1/04

    CPC分类号： H03D7/14 ,  H04B1/123

    摘要： A feedforward error-compensated receiver for minimizing undesired odd-order nonlinear distortion products. The receiver includes a first receiver path configured to receive an input signal. The first receiver path outputs a signal including at least one baseband (BB) frequency. At least one second receiver path is configured to receive the input signal and to provide a second receiver path output signal. The second receiver path includes at least one odd-order nonlinear distortion reference generator. The at least one odd-order nonlinear distortion reference generator and the mixer are configured to generate a synthetic odd-order nonlinear distortion signal. A combining element is configured to receive the output signal from the first path and the output signal from the second receiver path output and to combine the signals such that the odd-order nonlinear distortion signals are substantially attenuated at an output of the combining element.

    摘要翻译： 用于最小化不期望的奇数非线性失真产物的前馈误差补偿接收器。 接收机包括被配置为接收输入信号的第一接收器路径。 第一接收机路径输出包括至少一个基带（BB）频率的信号。 至少一个第二接收机路径被配置为接收输入信号并提供第二接收机路径输出信号。 第二接收器路径包括至少一个奇数阶非线性失真参考发生器。 所述至少一个奇数非线性失真参考发生器和所述混频器被配置为产生合成奇数非线性失真信号。 组合元件被配置为接收来自第一路径的输出信号和来自第二接收机路径输出的输出信号，并且组合信号，使得奇数阶非线性失真信号在组合元件的输出处基本衰减。

    Compensating circuit for a mixer stage
    8.
    发明授权
    Compensating circuit for a mixer stage 有权
    混频器补偿电路

    公开(公告)号：US07809348B2

    公开(公告)日：2010-10-05

    申请号：US11889986

    申请日：2007-08-17

    申请人： Michael Amann ,  Thorsten Fahlbusch ,  Leo Friesen ,  Andreas Leistner ,  Juergen Schnabel

    发明人： Michael Amann ,  Thorsten Fahlbusch ,  Leo Friesen ,  Andreas Leistner ,  Juergen Schnabel

    IPC分类号： H04Q1/10 ,  H04Q1/40

    CPC分类号： H03D7/14

    摘要： A compensating circuit for a mixer stage is provided, wherein the mixer stage has an input stage to which an input signal for mixing can be applied and has, following the input stage, a switching stage for mixing a differential input signal—obtained from the input stage as a function of the input signal—with an oscillator signal, wherein the input of the compensating circuit can be connected to an input signal terminal of the input stage and the output of the compensating circuit can be connected to an input signal terminal of the switching circuit at which the differential input signal obtained by means of the input stage is present, and wherein a compensating signal obtained by means of a compensating stage of the compensating circuit, in particular for compensating intermodulation products, can be produced by the compensating circuit at its output. The compensating circuit has a compensating input stage with means for influencing an amplitude and/or phase of the input signal, by which means the compensating stage can be supplied with a modified input signal.

    摘要翻译： 提供了一种用于混频器级的补偿电路，其中混频器级具有可以施加用于混频的输入信号的输入级，并且在输入级之后具有用于混合从输入端获得的差分输入信号的开关级 作为输入信号的函数的振荡器信号，其中补偿电路的输入可以连接到输入级的输入信号端，并且补偿电路的输出可以连接到输入信号的输入信号端 存在通过输入级获得的差分输入信号的开关电路，并且其中通过补偿电路的补偿级获得的补偿信号，特别是用于补偿互调产物，可以由补偿电路在 其输出。 补偿电路具有补偿输入级，其具有用于影响输入信号的幅度和/或相位的装置，通过该装置，补偿级可以被提供修改的输入信号。

    Harmonic rejection mixer
    9.
    发明授权
    Harmonic rejection mixer 失效
    谐波抑制混频器

    公开(公告)号：US07738851B2

    公开(公告)日：2010-06-15

    申请号：US11528039

    申请日：2006-09-27

    申请人： Daniel J. Cooley ,  Aslamali A. Rafi

    发明人： Daniel J. Cooley ,  Aslamali A. Rafi

    IPC分类号： H04B1/26

    CPC分类号： H04B1/30 ,  H03D7/14 ,  H03D2200/0086

    摘要： A technique includes providing a plurality of local oscillator signals such that each of the local oscillator signals has a different phase. The technique includes providing scaling units to scale the input signal pursuant to different scaling factors to generate scaled input signals. The scaling factors are selected on a periodic function of the phases. The technique also includes providing mixing circuits to mix the local oscillator signals with the scaled input signals to generate mixed signals and providing an adder to combine the mixed signals to generate an output signal.

    摘要翻译： 一种技术包括提供多个本地振荡器信号，使得每个本地振荡器信号具有不同的相位。 该技术包括提供缩放单元以根据不同的缩放因子缩放输入信号以产生缩放的输入信号。 在相位的周期函数上选择缩放因子。 该技术还包括提供混合电路以将本地振荡器信号与缩放的输入信号混合以产生混合信号并提供加法器来组合混合信号以产生输出信号。

    Mixer Circuit
    10.
    发明申请
    Mixer Circuit 有权
    混频器电路

    公开(公告)号：US20080305759A1

    公开(公告)日：2008-12-11

    申请号：US10586995

    申请日：2004-01-22

    申请人： Jussi-Pekka Tervaluoto ,  Antti Ruha ,  Tarmo Ruotsalainen

    发明人： Jussi-Pekka Tervaluoto ,  Antti Ruha ,  Tarmo Ruotsalainen

    IPC分类号： H03D7/14

    CPC分类号： H03D7/14

    摘要： The invention relates to a mixer circuit 31 comprising a down-conversion mixing component 33 arranged for down-converting an input radio frequency signal Irf+, Irf−. In order to improve such a mixer circuit, it is proposed that it comprises in addition an active mixer load circuit 34 connected to output terminals of the mixing component. The active mixer load circuit includes an active mixer load 51, T1, T2 and modulating means S1-S4 arranged for modulating a flicker noise produced by the active mixer load away from the signal band of a signal Ibb+, Ibb− output by the down-conversion mixing component. The invention relates equally to a receiver, a chip and a device comprising such a mixer circuit and to a method for use with such a mixer circuit.

    摘要翻译： 本发明涉及一种混频器电路31，该混频器电路31包括一个下变频混频部件33，用于下变频输入射频信号Irf +，Irf-。 为了改进这种混频器电路，提出了另外包括连接到混合部件的输出端的有源混频器负载电路34。 有源混频器负载电路包括有源混频器负载51，T1，T2和调制装置S1-S4，用于调制由有源混频器负载产生的闪烁噪声远离信号Ibb +，Ibb输出的信号频带， 转化混合组分。 本发明同样涉及接收机，芯片和包括这种混频器电路的装置以及与这种混频器电路一起使用的方法。