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    • 1. 发明授权
    • Mixer divider layout
    • 混音器分频器布局
    • US08503964B2
    • 2013-08-06
    • US13087749
    • 2011-04-15
    • Sjoerd Martijn HerderBerend Hendrik EssinkJohannes Petrus Antonius Frambach
    • Sjoerd Martijn HerderBerend Hendrik EssinkJohannes Petrus Antonius Frambach
    • H04B1/10
    • H03D7/165H03D7/1441
    • A symmetrical, balanced, down-conversion mixer is achieved by the coordinated layout of a balanced Local Oscillator (LO) divider circuit and a balanced Radio Frequency (RF) mixer circuit, such that the LO divider is in the center and the RF mixer is arrayed symmetrically around the LO divider. In particular, the LO divider is partitioned into four portions (e.g., Ip, In, Qp, Qn), which are placed in respective quadrants, defined by orthogonal reference axes through the LO divider center. The RF mixer is similarly partitioned into four corresponding portions, which are placed around the LO divider portions in each quadrant. By integrating the LO divider and RF mixer in the layout of the symmetric, balanced, down-conversion mixer, greater component matching and control of current paths are possible, improving operational quality parameters such as IRR, IP2, and LO feedthrough.
    • 通过平衡的本地振荡器(LO)分频器电路和平衡射频(RF)混频器电路的协调布局来实现对称,平衡,下变频混频器,使得LO分频器在中心并且RF混频器 围绕LO分频器对称排列。 特别地,LO分频器被分成四个部分(例如,Ip,In,Qp,Qn),其被放置在通过LO分频器中心的正交参考轴限定的相应象限中。 RF混频器被类似地划分成四个对应的部分,它们围绕每个象限中的LO分配器部分放置。 通过在对称,平衡,下变频混频器的布局中集成LO分频器和RF混频器,可以实现更大的组件匹配和电流路径的控制,从而改善运行质量参数,如IRR,IP2和LO馈通。
    • 2. 发明申请
    • Mixer Divider Layout
    • 搅拌机分隔布局
    • US20120081169A1
    • 2012-04-05
    • US13087749
    • 2011-04-15
    • Sjoerd HerderBerend Hendrik EssinkJohannes Frambach
    • Sjoerd HerderBerend Hendrik EssinkJohannes Frambach
    • G06G7/16G06F17/50
    • H03D7/165H03D7/1441
    • A symmetrical, balanced, down-conversion mixer is achieved by the coordinated layout of a balanced Local Oscillator (LO) divider circuit and a balanced Radio Frequency (RF) mixer circuit, such that the LO divider is in the center and the RF mixer is arrayed symmetrically around the LO divider. In particular, the LO divider is partitioned into four portions (e.g., Ip, In, Qp, Qn), which are placed in respective quadrants, defined by orthogonal reference axes through the LO divider center. The RF mixer is similarly partitioned into four corresponding portions, which are placed around the LO divider portions in each quadrant. By integrating the LO divider and RF mixer in the layout of the symmetric, balanced, down-conversion mixer, greater component matching and control of current paths are possible, improving operational quality parameters such as IRR, IP2, and LO feedthrough.
    • 通过平衡的本地振荡器(LO)分频器电路和平衡射频(RF)混频器电路的协调布局来实现对称,平衡,下变频混频器,使得LO分频器在中心并且RF混频器 围绕LO分频器对称排列。 特别地,LO分频器被分成四个部分(例如,Ip,In,Qp,Qn),其被放置在通过LO分频器中心的正交参考轴限定的相应象限中。 RF混频器被类似地划分成四个对应的部分,它们围绕每个象限中的LO分配器部分放置。 通过在对称,平衡,下变频混频器的布局中集成LO分频器和RF混频器,可以实现更大的组件匹配和电流路径的控制,从而改善运行质量参数,如IRR,IP2和LO馈通。
    • 3. 发明申请
    • ANTENNA SWITCH WITH ESD ISOLATION
    • 天线开关与ESD隔离
    • US20120083224A1
    • 2012-04-05
    • US13045848
    • 2011-03-11
    • Hendrik VisserBerend Hendrik Essink
    • Hendrik VisserBerend Hendrik Essink
    • H04B1/44
    • H04B1/525
    • A triple winding balun is combined with multiple switch assemblies to implement an antenna switch that provides good isolation, low loss, and good linearity with only a minor increase to the overall chip footprint. The antenna switch also isolates the receiver from power surges, where the power surges may be due to electrostatic discharge, undesirable WiMAX/LTE signals, etc. An exemplary antenna switch comprises a triple winding balun, a first switch subassembly, and an optional second switch subassembly. During stand-by and transmit modes, the first and second switch subassemblies respectively isolate the receiver from transmitter output current and connect a positive voltage bias to the third winding to prevent negative voltage swings at the receiver. During the receive mode, the configuration of the first and second switch subassemblies flips to connect the receiver to the third winding of the balun and to isolate the receiver from power surges.
    • 三重绕组平衡 - 不平衡变压器与多个开关组件相结合,实现天线开关,提供良好的隔离度,低损耗和良好的线性度,只需轻微增加整个芯片占用空间。 天线开关还将接收器与功率浪涌隔离,其中功率浪涌可能是由于静电放电,不期望的WiMAX / LTE信号等。示例性天线开关包括三绕组平衡 - 不平衡变换器,第一开关子组件和可选的第二开关 子组件 在待机和发送模式期间,第一和第二开关子组件分别将接收器与发射机输出电流隔离,并将正电压偏置连接到第三绕组,以防止接收器处的负电压摆动。 在接收模式期间,第一和第二开关子组件的配置翻转以将接收器连接到平衡 - 不平衡变换器的第三绕组,并使接收器与电源浪涌隔离。
    • 5. 发明授权
    • Antenna switch with ESD isolation
    • 天线开关具有ESD隔离
    • US08666330B2
    • 2014-03-04
    • US13045848
    • 2011-03-11
    • Hendrik VisserBerend Hendrik Essink
    • Hendrik VisserBerend Hendrik Essink
    • H04B1/44
    • H04B1/525
    • A triple winding balun is combined with multiple switch assemblies to implement an antenna switch that provides good isolation, low loss, and good linearity with only a minor increase to the overall chip footprint. The antenna switch also isolates the receiver from power surges, where the power surges may be due to electrostatic discharge, undesirable WiMAX/LTE signals, etc. An exemplary antenna switch comprises a triple winding balun, a first switch subassembly, and an optional second switch subassembly. During stand-by and transmit modes, the first and second switch subassemblies respectively isolate the receiver from transmitter output current and connect a positive voltage bias to the third winding to prevent negative voltage swings at the receiver. During the receive mode, the configuration of the first and second switch subassemblies flips to connect the receiver to the third winding of the balun and to isolate the receiver from power surges.
    • 三重绕组平衡 - 不平衡变压器与多个开关组件相结合,实现天线开关,提供良好的隔离度,低损耗和良好的线性度,只需轻微增加整个芯片占用空间。 天线开关还将接收器与功率浪涌隔离,其中功率浪涌可能是由于静电放电,不期望的WiMAX / LTE信号等。示例性天线开关包括三绕组平衡 - 不平衡变换器,第一开关子组件和可选的第二开关 子组件 在待机和发送模式期间,第一和第二开关子组件分别将接收器与发射机输出电流隔离,并将正电压偏置连接到第三绕组,以防止接收器处的负电压摆动。 在接收模式期间,第一和第二开关子组件的配置翻转以将接收器连接到平衡 - 不平衡变换器的第三绕组,并使接收器与电源浪涌隔离。
    • 6. 发明授权
    • Polyphase filter
    • 多相过滤器
    • US06346850B2
    • 2002-02-12
    • US09741014
    • 2000-12-21
    • Berend Hendrik Essink
    • Berend Hendrik Essink
    • H03K500
    • H03H11/22H03H2011/0494
    • A polyphase filter (20; 100) is described having two filter channels (30I, 30Q; 101I, 101q) for processing an I-input signal (&phgr;I) and a Q-input signal (&phgr;Q) which is shifted over 90° with respect to the I-input signal (&phgr;I), respectively. The filter (20; 100) has at least two capacitive filter components (CI, CQ; CiI, CiQ) corresponding to each other in the two filter channels (30I, 30Q; 101I, 101Q), wherein the capacity values (C; Ci) of these two capacitive filter components (CI, CQ; CiI, CiQ) are substantially equal to each other. Said two capacitive filter components (CI, CQ; CiI, CiQ) are coupled to each other by means of two current source couplings (40QI, 40IQ; 106i) switched in anti-parallel, having substantially equal characteristic. Hereby, a displacement of the filter characteristic toward higher frequencies is achieved, over a distance &OHgr;c.
    • 描述了具有用于处理I输入信号(phiI)的两个滤波器通道(30I,30Q; 101I,101q)和相对于90°移动90°的Q输入信号(phiQ)的多相滤波器(20; 100) 分别到I输入信号(phiI)。 滤波器(20; 100)在两个滤波器通道(30I,30Q; 101I,101Q)中具有彼此对应的至少两个电容滤波器组件(CI,CQ; Ci,CiQ),其中容量值(C; C i )这两个电容滤波器组件(CI,CQ; Ci,CiQ)彼此基本相等。 所述两个电容滤波器组件(CI,CQ; CiI,CiQ)通过两个电流源耦合(40QI,40IQ; 106i)彼此耦合,具有基本上相等的特性。 因此,在距离OMEGAc处实现了滤波器特性朝向较高频率的位移。