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    Frequency down-conversion
    97.
    发明授权
    Frequency down-conversion 有权
    频率下转换

    公开(公告)号：US09331634B2

    公开(公告)日：2016-05-03

    申请号：US14449556

    申请日：2014-08-01

    申请人： NXP B.V.

    发明人： Frank Leong ,  Salvatore Drago

    IPC分类号： H04B1/26 ,  H03D7/16 ,  H03D7/18 ,  H04B1/16

    CPC分类号： H03D7/165 ,  H03D7/161 ,  H03D7/166 ,  H03D7/18 ,  H04B1/16

    摘要： Apparatus and methods concern down-converting a radio frequency (RF) signal. As an example, one apparatus includes a first mixer and a second mixer. The first mixer down-converts an RF signal to produce a first intermediate frequency (IF) signal. The second mixer down-converts the first IF signal to produce a second IF signal having a plurality of phase components. The down-converter also includes a plurality of summing circuits. Each of the summing circuits is configured to combine various ones of the phase components of the second IF signal to produce a respective phase component of a third IF signal. The number of phase components in the third IF signal is different from the number of phase components in the second IF signal.

    摘要翻译： 装置和方法涉及下变频射频（RF）信号。 作为示例，一个装置包括第一混合器和第二混合器。 第一混频器对RF信号进行下变频以产生第一中频（IF）信号。 第二混频器对第一IF信号进行下变频以产生具有多个相位分量的第二IF信号。 下变换器还包括多个求和电路。 每个求和电路被配置为组合第二IF信号的各个相位分量以产生第三IF信号的相应相位分量。 第三IF信号中的相位分​​量的数量与第二IF信号中的相位分​​量的数量不同。

    Sampling mixer circuit and receiver
    98.
    发明授权
    Sampling mixer circuit and receiver 有权
    采样混频电路和接收机

    公开(公告)号：US09318999B2

    公开(公告)日：2016-04-19

    申请号：US14368770

    申请日：2013-01-22

    申请人： Panasonic Corporation

    发明人： Yohei Morishita

    IPC分类号： H03D7/16 ,  H04B1/26 ,  H03D7/00 ,  H03D7/12 ,  H03D7/18 ,  G11C19/00 ,  G11C27/02 ,  H03H19/00 ,  H04B7/08 ,  H04L25/08 ,  H03H15/00 ,  H03D7/14

    CPC分类号： H03D7/00 ,  G11C19/00 ,  G11C27/024 ,  H03D7/125 ,  H03D7/1441 ,  H03D7/18 ,  H03D2200/0062 ,  H03D2200/0068 ,  H03H15/00 ,  H03H19/004 ,  H04B7/0885 ,  H04L25/08

    摘要： The sampling mixer circuit comprises: a clock generating circuit that outputs four-phase control signals the periods of which are in accordance with the carrier frequency of an input signal and the phases of which are different from one another; a voltage-to-current converting circuit that converts a voltage signal based on the input signal to a current signal; four-system charge sharing circuits in which the current signal as converted is input to a plurality of capacitors in accordance with the different phases based on the four-phase control signals and in which charges are exchanged among the plurality of capacitors; and a phase-to-phase capacitor that is selectively connected, on the basis of the four-phase control signals, to the respective ones of nodes, which are other than the input nodes of the current signal, in the four-system charge sharing circuits.

    摘要翻译： 采样混频器电路包括：时钟发生电路，其输出其周期与输入信号的载波频率和相位彼此不同的四相控制信号; 电压 - 电流转换电路，其将基于所述输入信号的电压信号转换为电流信号; 四变系统电荷共享电路，其中根据四相控制信号将转换的电流信号输入到多个电容器，并且其中电荷在多个电容器之间交换; 以及基于四相控制信号在四系统电荷共享中被选择性地连接到不同于当前信号的输入节点的各个节点的相电容器 电路。

    Mixer unit
    99.
    发明授权
    Mixer unit 有权
    搅拌机单元

    公开(公告)号：US09264091B2

    公开(公告)日：2016-02-16

    申请号：US14346103

    申请日：2012-09-14

    申请人： Martin Anderson ,  Henrik Sjöland ,  Lars Sundström ,  Jim Svensson

    发明人： Martin Anderson ,  Henrik Sjöland ,  Lars Sundström ,  Jim Svensson

    IPC分类号： H04B1/26 ,  H04B1/405 ,  H03D7/16 ,  H03D7/18 ,  H04L27/12

    CPC分类号： H04B1/405 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/165 ,  H03D7/18 ,  H04L27/12

    摘要： A mixer unit (30) for frequency translating, based on an LO signal, an input signal having one or more input signal components is disclosed. The mixer unit has a signal processing path (50a-d, 60a-d) from each Input terminal (32+, 32−) to each output terminal (34_I+, 34_I−, 34_Q+,34_Q−) of the mixer unit (30), The LO signal has an associated LO signal component (LO_Ia-d, LO_Qa-d) for each signal processing path. The mixer unit (30) comprises a plurality of mixer switches (70a-N) and a control unit (90). The control unit (90) is adapted to, for each signal processing path (50a-d, 60a-d), dynamically select an associated subset, in the following denoted active switch subset, of the plurality of mixer switches (70a-N) for operation in the signal processing path (50a-d, 60a˜d) such that which of the plurality of mixer switches (70a-N) belong to said active switch subset varies in time. At any instant in time, the union of all the active switch subsets is a strict subset, denoted combined active subset, of the plurality of mixer switches (70a-N). The control unit (90) is further adapted to activate only the mixer switches (70a-N) in said combined active subset by, for each mixer switch (70a-N) in the combined active subset, supplying the corresponding LO signal component to the mixer switch. A related radio receiver circuit (10), a related radio communication apparatus (1, 2), and a related method are also disclosed.

    摘要翻译： 公开了一种用于基于LO信号频率转换具有一个或多个输入信号分量的输入信号的混频器单元（30）。 混合器单元具有从混合器单元（30）的每个输入端子（32+，32-）到混合器单元（30）的每个输出端子（34_I +，34_I-，34_Q +，34_Q-）的信号处理路径（50a-d，60a-d） LO信号具有针对每个信号处理路径的相关LO信号分量（LO_Ia-d，LO_Qa-d）。 混频器单元（30）包括多个混频器开关（70a-N）和控制单元（90）。 控制单元（90）适于对于每个信号处理路径（50a-d，60a-d），动态地选择多个混频器开关（70a-N）中的以下表示的有源开关子集中的相关子集， 用于在信号处理路径（50a-d，60a〜d）中操作，使得多个混频器开关（70a-N）中的哪一个属于所述有源开关子集在时间上变化。 在任何时刻，所有有源开关子集的并集是多个混频器开关（70a-N）中标明为组合有源子集的严格子集。 控制单元（90）还适于仅通过组合有源子集中的每个混合器开关（70a-N）激活所述组合有效子集中的混频器开关（70a-N），将相应的LO信号分量提供给 搅拌机开关 还公开了一种相关无线电接收机电路（10），相关无线电通信装置（1,2）及相关方法。

    Mixer circuit
    100.
    发明授权
    Mixer circuit 有权
    搅拌机电路

    公开(公告)号：US09124215B2

    公开(公告)日：2015-09-01

    申请号：US14110111

    申请日：2011-04-04

    申请人： Mingquan Bao

    发明人： Mingquan Bao

    IPC分类号： H01Q11/12 ,  H04B1/04 ,  H03D7/14 ,  H03D7/18

    CPC分类号： H03D7/1425 ,  H03C2200/0083 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03D7/18 ,  H03D2200/0033 ,  H03D2200/0043 ,  H03D2200/009 ,  H04B1/04

    摘要： A mixer circuit (200, 300, 800, 900) for mixing a first input signal at a first frequency with a second input signal at a second frequency to an output signal at a third frequency. The mixer circuit (200, 300, 800, 900) comprises a mixing stage (205, 805) with differential input ports (206, 207; 820, 821) for the first input signal and an input port (211, 911) for the second input signal and differential output ports for the output signal, which also serve as output ports for the mixer circuit. The mixer circuit (200, 300, 800, 900) comprises a nonlinear digital to analogue converter (210, 810) which has an input port (211) which is the input port for the second input signal and an output port (212) which is connected to the input port of the mixing stage, and the digital to analogue converter has a nonlinear transfer function.

    摘要翻译： 一种用于将第一频率的第一输入信号与第二频率的第二输入信号以第三频率混合到输出信号的混频器电路（200,300,800,900）。 混频器电路（200,300,800,900）包括具有用于第一输入信号的差分输入端口（206,207; 820,821）的混合级（205,805）和用于第一输入信号的输入端口（211,911） 输出信号的第二输入信号和差分输出端口，其也用作混频器电路的输出端口。 混频器电路（200,300,800,900）包括非线性数模转换器（210,810），其具有作为第二输入信号的输入端口的输入端口（211）和输出端口（212），其中， 连接到混合级的输入端口，数模转换器具有非线性传递函数。