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    • 2. 发明公开
    • Mixerstructure for Doppler radar applications
    • MischerstrukturfürDopplerradaranwendungen
    • EP2369738A1
    • 2011-09-28
    • EP11170528.1
    • 2008-07-17
    • BEA S.A.
    • Borlez, Yves
    • H03D7/02H03D9/06G01S7/03
    • H03D7/02G01S7/032G01S13/56H03D9/0633
    • A Mixer structure (210) for Doppler radar applications and a Doppler radar sensor (30) having an oscillator input port (LO) for output signals from an electric oscillator (32), having an radio frequency input port (RF) for output signals from receiving means (34), having an output port (IF) for an overall output intermediate signal produced in the mixer structure (210) and having two mixer branches (12a, 12b) each with a diode (18a, 18b). The mixer branches (12a, 12b) are connected to the oscillator input port (LO) and to the radio frequency input port (RF) in such a manner that intermediate signals (IF1, IF2), which are produced in these mixer branches (12a, 12b) and correspond to a Doppler shift between the oscillator signal and the radio frequency signal, are processed to the overall output signal. Each mixer branch (12a, 12b) includes a rectifier circuit having a diode (18a, 18b; 118a, 118b), a load resistor (22a, 22b), a decoupling capacitor (24a, 24b), a series resistor (14a, 14b) and a series capacitance (16a, 16b).
    • 一种用于多普勒雷达应用的混合器结构(210)以及具有用于从电振荡器(32)输出信号的振荡器输入端口(LO)的多普勒雷达传感器(30),具有用于输出信号的射频输入端口 接收装置(34),具有用于在混频器结构(210)中产生的总输出中间信号的输出端口(IF),并且具有两个具有二极管(18a,18b)的混频器分支(12a,12b)。 混频器分支(12a,12b)以这样的方式连接到振荡器输入端口(LO)和射频输入端口(RF),即在这些混频器分支(12a)中产生的中间信号(IF1,IF2) ,12b)并对应于振荡器信号和射频信号之间的多普勒频移被处理为总输出信号。 每个混频器分支(12a,12b)包括具有二极管(18a,18b; 118a,118b),负载电阻器(22a,22b),去耦电容器(24a,24b),串联电阻器(14a,14b) )和串联电容(16a,16b)。
    • 3. 发明公开
    • COMPENSATED RING MIXERS
    • KOMPENSIERTE RINGMISCHER
    • EP0815653A4
    • 1998-07-08
    • EP96912704
    • 1996-04-11
    • WATKINS JOHNSON CO
    • LI XIAOHUI
    • H03D7/02H03D7/14H04B1/26
    • H03D7/1408
    • A compensated mixer including a radio frequency (RF) balun (18) through which RF signals are transferred, and a local oscillator (LO) balun (14) for receiving an LO signal. In an exemplary implementation the mixer further includes a diode ring quad circuit (12) for mixing RF signals received by the RF balun (18) with the LO signal received by the LO balun (14). During operation the diode ring quad circuit develops, between the first and second nodes therein (50, 52), a capacitive reactance arising from switching at the LO frequency. The mixer further includes a compensation inductor (56), connected between the first and second nodes (50, 52), for cancelling the effect of the capacitive reactance at the LO signal frequency.
    • 包括RF信号传输通过的射频(RF)巴伦(18)和用于接收LO信号的本地振荡器(LO)巴伦(14)的补偿混频器。 在示例性实施方式中,混频器还包括用于混合由RF巴伦(18)接收的RF信号与由LO巴伦(14)接收的LO信号的二极管环形四电路(12)。 在工作期间,二极管环四电路在其中的第一和第二节点(50,52)之间形成由LO频率切换产生的电容性电抗。 混频器还包括连接在第一和第二节点(50,52)之间的补偿电感器(56),用于消除LO信号频率下的容抗的影响。