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    Filter circuit and communication semiconductor device using the same
    1.
    发明授权
    Filter circuit and communication semiconductor device using the same 有权
    滤波电路和通信半导体器件使用相同

    公开(公告)号：US08116715B2

    公开(公告)日：2012-02-14

    申请号：US12197703

    申请日：2008-08-25

    申请人： Tomohiro Sano ,  Takaya Maruyama ,  Hisayasu Sato

    发明人： Tomohiro Sano ,  Takaya Maruyama ,  Hisayasu Sato

    IPC分类号： H04B1/10 ,  H04K3/00

    CPC分类号： H02M3/07 ,  H03H15/00

    摘要： The present invention intends to provide a filter circuit in which an area occupied by the circuit can be reduced by suppressing the scale of its circuit configuration while a predetermined vicinity disturbance wave rejection ratio is maintained and a communication semiconductor device using the same, the filter circuit filtering an analog signal and including a voltage/current conversion circuit for converting the analog signal from voltage to current, and a capacitor array which executes signal processing by charging/discharging the current converted by the voltage/current conversion circuit to/from plural capacitors, the capacitor array being so constructed that the plural capacitors are divided to plural stages so that signals averaged by the capacitor on a preceding stage are accumulated in the capacitor on a next stage successively.

    摘要翻译： 本发明旨在提供一种滤波电路，其中通过在保持预定的邻近干扰波抑制比的同时抑制其电路结构的规模并且使用该滤波电路的通信半导体器件，可以减小电路占据的面积，滤波电路 滤波模拟信号，并包括用于将模拟信号从电压转换成电流的电压/电流转换电路;以及电容器阵列，其通过从/从多个电容器转换电压/电流转换电路的电流进行充电/放电来执行信号处理， 电容器阵列被构造成使得多个电容器被分成多个级，使得在前一级上的电容器平均的信号在下一级依次累积在电容器中。

    FILTER CIRCUIT AND COMMUNICATION SEMICONDUCTOR DEVICE USING THE SAME
    2.
    发明申请
    FILTER CIRCUIT AND COMMUNICATION SEMICONDUCTOR DEVICE USING THE SAME 审中-公开
    滤波电路和通信半导体器件

    公开(公告)号：US20120092065A1

    公开(公告)日：2012-04-19

    申请号：US13335284

    申请日：2011-12-22

    申请人： Tomohiro SANO ,  Takaya Maruyama ,  Hisayasu Sato

    发明人： Tomohiro SANO ,  Takaya Maruyama ,  Hisayasu Sato

    IPC分类号： H03B1/04

    CPC分类号： H02M3/07 ,  H03H15/00

    摘要： The present invention intends to provide a filter circuit in which an area occupied by the circuit can be reduced by suppressing the scale of its circuit configuration while a predetermined vicinity disturbance wave rejection ratio is maintained and a communication semiconductor device using the same, the filter circuit filtering an analog signal and including a voltage/current conversion circuit for converting the analog signal from voltage to current, and a capacitor array which executes signal processing by charging/discharging the current converted by the voltage/current conversion circuit to/from plural capacitors, the capacitor array being so constructed that the plural capacitors are divided to plural stages so that signals averaged by the capacitor on a preceding stage are accumulated in the capacitor on a next stage successively.

    摘要翻译： 本发明旨在提供一种滤波电路，其中通过在保持预定的邻近干扰波抑制比的同时抑制其电路结构的规模并且使用该滤波电路的通信半导体器件，可以减小电路占据的面积，滤波电路 滤波模拟信号，并包括用于将模拟信号从电压转换成电流的电压/电流转换电路;以及电容器阵列，其通过从/从多个电容器转换电压/电流转换电路的电流进行充电/放电来执行信号处理， 电容器阵列被构造成使得多个电容器被分成多个级，使得在前一级上的电容器平均的信号在下一级依次累积在电容器中。

    FILTER CIRCUIT AND COMMUNICATION SEMICONDUCTOR DEVICE USING THE SAME
    3.
    发明申请
    FILTER CIRCUIT AND COMMUNICATION SEMICONDUCTOR DEVICE USING THE SAME 有权
    滤波电路和通信半导体器件

    公开(公告)号：US20090068976A1

    公开(公告)日：2009-03-12

    申请号：US12197703

    申请日：2008-08-25

    申请人： Tomohiro SANO ,  Takaya Maruyama ,  Hisayasu Sato

    发明人： Tomohiro SANO ,  Takaya Maruyama ,  Hisayasu Sato

    IPC分类号： H04B1/16 ,  H02M11/00

    CPC分类号： H02M3/07 ,  H03H15/00

    摘要： The present invention intends to provide a filter circuit in which an area occupied by the circuit can be reduced by suppressing the scale of its circuit configuration while a predetermined vicinity disturbance wave rejection ratio is maintained and a communication semiconductor device using the same, the filter circuit filtering an analog signal and including a voltage/current conversion circuit for converting the analog signal from voltage to current, and a capacitor array which executes signal processing by charging/discharging the current converted by the voltage/current conversion circuit to/from plural capacitors, the capacitor array being so constructed that the plural capacitors are divided to plural stages so that signals averaged by the capacitor on a preceding stage are accumulated in the capacitor on a next stage successively.

    摘要翻译： 本发明旨在提供一种滤波电路，其中通过在保持预定的邻近干扰波抑制比的同时抑制其电路结构的规模并且使用该滤波电路的通信半导体器件，可以减小电路占据的面积，滤波电路 滤波模拟信号，并包括用于将模拟信号从电压转换成电流的电压/电流转换电路;以及电容器阵列，其通过从/从多个电容器转换电压/电流转换电路的电流进行充电/放电来执行信号处理， 电容器阵列被构造成使得多个电容器被分成多个级，使得在前一级上的电容器平均的信号在下一级依次累积在电容器中。

    Frequency mixer preventing degradation in linearity on amplitude of input signal
    4.
    发明授权
    Frequency mixer preventing degradation in linearity on amplitude of input signal 失效
    混频器防止输入信号幅度的线性降低

    公开(公告)号：US07382175B2

    公开(公告)日：2008-06-03

    申请号：US11083242

    申请日：2005-03-18

    申请人： Takaya Maruyama ,  Hisayasu Sato

    发明人： Takaya Maruyama ,  Hisayasu Sato

    IPC分类号： G06F7/44 ,  H04B1/26

    CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0033 ,  H03D2200/0043

    摘要： A frequency mixer includes a first N channel MOS transistor, second and third N channel MOS transistors constituting a local oscillator signal differential pair, and having substantially identical properties, a first load, and a second load. The first N channel MOS transistor receives an RF signal at its gate. A local oscillator signal is applied to the gates of the second and third N channel MOS transistors. The drain current of the second and third N channel MOS transistors is output to the drain of the first N channel MOS transistor. An amplitude-current conversion circuit receives the RF signal and provides an output current to the drain of the first N channel MOS transistor to decrease monotonously the output current with respect to the amplitude of the RF signal.

    摘要翻译： 混频器包括构成本地振荡器信号差分对的第一N沟道MOS晶体管，第二和第三N沟道MOS晶体管，并且具有基本相同的特性，第一负载和第二负载。 第一N沟道MOS晶体管在其栅极接收RF信号。 本地振荡器信号施加到第二和第三N沟道MOS晶体管的栅极。 第二和第三N沟道MOS晶体管的漏极电流输出到第一N沟道MOS晶体管的漏极。 振幅电流转换电路接收RF信号并向第一N沟道MOS晶体管的漏极提供输出电流，以相对于RF信号的幅度单调减小输出电流。

    Gain control circuit for controlling operation of a variable-gain amplifier or the like
    5.
    发明授权
    Gain control circuit for controlling operation of a variable-gain amplifier or the like 失效
    用于控制可变增益放大器等的操作的增益控制电路

    公开(公告)号：US06144233A

    公开(公告)日：2000-11-07

    申请号：US350916

    申请日：1999-07-12

    申请人： Takaya Maruyama ,  Hisayasu Sato

    发明人： Takaya Maruyama ,  Hisayasu Sato

    IPC分类号： H03F1/30 ,  H03F3/34 ,  H03G1/00 ,  H03G1/04 ,  H03K5/153

    CPC分类号： H03G1/0023

    摘要： A gain control circuit includes a first path block for a gain control voltage and a second path block for a reference voltage. The first path block includes a voltage-current linear conversion unit for outputting a current which is proportional to a gain control voltage V.sub.ctrl, and which is inversely proportional to a resistivity, and also includes a temperature characteristic compensation unit for mirroring the current output by the voltage-current linear conversion unit and outputting a current I.sub.ctrl which is proportional to the gain control voltage V.sub.ctrl and an absolute temperature, and which is inversely proportional to the resistivity. The second path block has the same construction as the first path block except that it receives a reference voltage V.sub.ref and outputs a current I.sub.ref. The current I.sub.ctrl and the current I.sub.ref are supplied to a variable- gain cell so as to produce a voltage gain A.sub.v not affected by a variation in temperature.

    摘要翻译： 增益控制电路包括用于增益控制电压的第一路径块和用于参考电压的第二路径块。 第一路径块包括电压 - 电流线性转换单元，用于输出与增益控制电压Vctr1成比例的电流，并且与电阻率成反比，并且还包括温度特性补偿单元，用于将由 电压 - 电流线性转换单元，并输出与增益控制电压Vctr1成比例的电流Ictr1和绝对温度，并且与电阻率成反比。 第二路径块具有与第一路径块相同的结构，除了它接收参考电压Vref并输出当前Iref。 电流Ictrl和电流Iref被提供给可变增益单元，以产生不受温度变化影响的电压增益Av。

    Frequency mixer preventing degradation in linearity on amplitude of input signal
    6.
    发明申请
    Frequency mixer preventing degradation in linearity on amplitude of input signal 失效
    混频器防止输入信号幅度的线性降低

    公开(公告)号：US20050208922A1

    公开(公告)日：2005-09-22

    申请号：US11083242

    申请日：2005-03-18

    申请人： Takaya Maruyama ,  Hisayasu Sato

    发明人： Takaya Maruyama ,  Hisayasu Sato

    IPC分类号： H03F3/45 ,  H03D7/12 ,  H03D7/14 ,  H04B1/26

    CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0033 ,  H03D2200/0043

    摘要： A frequency mixer includes a first N channel MOS transistor, second and third N channel MOS transistors constituting a local oscillator signal differential pair, and having substantially identical properties, a first load, and a second load. The first N channel MOS transistor receives an RF signal at its gate. A local oscillator signal is applied to the gates of the second and third N channel MOS transistors. The drain current of the second and third N channel MOS transistors is output to the drain of the first N channel MOS transistor. An amplitude-current conversion circuit receives the RF signal and provides an output current to the drain of the first N channel MOS transistor to decrease monotonously the output current with respect to the amplitude of the RF signal.

    摘要翻译： 混频器包括构成本地振荡器信号差分对的第一N沟道MOS晶体管，第二和第三N沟道MOS晶体管，并且具有基本相同的特性，第一负载和第二负载。 第一N沟道MOS晶体管在其栅极接收RF信号。 本地振荡器信号施加到第二和第三N沟道MOS晶体管的栅极。 第二和第三N沟道MOS晶体管的漏极电流输出到第一N沟道MOS晶体管的漏极。 振幅电流转换电路接收RF信号并向第一N沟道MOS晶体管的漏极提供输出电流，以相对于RF信号的幅度单调减小输出电流。