中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

37 records (took 0.042 seconds)

    LOW DISTORTION IMPEDANCE SELECTION AND TUNABLE IMPEDANCE CIRCUITS
    15.
    发明申请
    LOW DISTORTION IMPEDANCE SELECTION AND TUNABLE IMPEDANCE CIRCUITS 有权
    低失真阻抗选择和阻抗阻抗电路

    公开(公告)号：US20130043957A1

    公开(公告)日：2013-02-21

    申请号：US13212762

    申请日：2011-08-18

    Applicant: Hajime SHIBATA

    Inventor： Hajime SHIBATA

    IPC: H03B5/12 ,  H03H11/00

    CPC classification number: H03H11/245 ,  H03B5/00 ,  H03B2201/011 ,  H03B2201/018 ,  H03B2201/0208 ,  H03B2201/025

    Abstract: A tunable impedance circuit can include a fixed impedance and one or more impedance selection circuits. Each impedance selection circuit can include a first impedance connected to a first interface terminal, a second impedance connected to a second interface terminal, and a plurality of series-connected transistors connected between the first and second impedances. Each impedance selection circuit can also include a plurality of drive impedance networks connected to gates, sources, drains, bodies, and isolation regions of the series-connected transistors, and a control circuit to provide a plurality of control signals to the drive impedance networks to turn on and turn off the series-connected transistors. For each impedance selection circuit, turning on and turning off the respective plurality of series-connected transistors can bring the series combination of the respective first and second impedances into and out of electrical communication with, e.g., into and out of parallel with, the fixed impedance.

    Abstract translation: 可调谐阻抗电路可以包括固定阻抗和一个或多个阻抗选择电路。 每个阻抗选择电路可以包括连接到第一接口端子的第一阻抗，连接到第二接口端子的第二阻抗以及连接在第一和第二阻抗之间的多个串联连接的晶体管。 每个阻抗选择电路还可以包括连接到串联连接晶体管的栅极，源极，漏极，主体和隔离区域的多个驱动阻抗网络，以及控制电路，以向驱动阻抗网络提供多个控制信号 打开并关闭串联晶体管。 对于每个阻抗选择电路，导通和关断相应的多个串联晶体管可以使相应的第一和第二阻抗的串联组合进入和流出与例如固定的 阻抗。

    Microwave oscillating circuit and remotely controllable “Kotatsu” using the same
    16.
    发明授权
    Microwave oscillating circuit and remotely controllable “Kotatsu” using the same 失效
    微波振荡电路和远程可控“Kotatsu”使用相同

    公开(公告)号：US06252470B1

    公开(公告)日：2001-06-26

    申请号：US09451318

    申请日：1999-11-30

    Applicant: Kazuaki Togawa

    Inventor： Kazuaki Togawa

    IPC: H03B518

    CPC classification number: H03B5/1847 ,  H03B2201/011 ,  H03B2201/0208 ,  H03B2201/0225

    Abstract: An oscillating circuit adjusts its oscillating frequency through the following method. A tip-open type strip-line stub coupled to the base terminal of the transistor. An electrical length of the stub is changed by an adjusting mechanism such as coupling the stub with conductive small lands provided near the stub tip by a chip resistor. A “kotatsu” employs a remote controller including this oscillating circuit.

    Abstract translation: 振荡电路通过以下方法调整振荡频率。 耦合到晶体管的基极的尖端开放型带状线短路。 短截线的电长度通过调节机构改变，例如通过芯片电阻器将短截线与短截线附近提供的导电小平台连接。 “kotatsu”采用包括该振荡电路的遥控器。

    Voltage controlled oscillator including a dielectric resonator provided with a C-shaped electrode and method of regulating oscillation frequency thereof
    17.
    发明授权
    Voltage controlled oscillator including a dielectric resonator provided with a C-shaped electrode and method of regulating oscillation frequency thereof 失效
    压控振荡器包括具有C形电极的介质谐振器和调节其振荡频率的方法

    公开(公告)号：US5373262A

    公开(公告)日：1994-12-13

    申请号：US009854

    申请日：1993-01-27

    Applicant: Hiroyuki Yamamoto ,  Atsushi Inoue ,  Tatsuo Bizen

    Inventor： Hiroyuki Yamamoto ,  Atsushi Inoue ,  Tatsuo Bizen

    IPC: H01P7/08 ,  H03B1/00 ,  H03B5/18 ,  H01P7/10

    CPC classification number: H03B5/1852 ,  H03B2201/011 ,  H03B2201/012 ,  H03B2201/014 ,  H03B5/1805 ,  H03B5/1876

    Abstract: In a voltage controlled oscillator, a dielectric resonator is mounted on a circuit board and a metal case is mounted on the circuit board to shield the dielectric resonator. The dielectric resonator comprises a C-shaped first electrode which is provided in a dielectric body, second and third electrodes which are arranged on upper and lower sides of the first electrode, a signal connecting pattern which is extended from the first electrode toward a side surface of the dielectric body, and earth connecting patterns which are extended from the first, second and third electrodes toward the side surface of the dielectric body, to provide predetermined impedance between the earth connecting pattern and the signal connecting pattern. The dielectric resonator is arranged with the second and third electrodes in parallel with a major surface of the circuit board, and the second electrode is upwardly exposed. A portion of the second electrode portion at a predetermined position is adapted to be trimmed so as to regulate the resonance frequency of the dielectric resonator, so as to regulate the oscillator frequency of the voltage controlled oscillator. The dielectric resonator can be miniaturized with no reduction of its Q-value.

    Abstract translation: 在压控振荡器中，电介质谐振器安装在电路板上，金属外壳安装在电路板上以屏蔽介质谐振器。 介质谐振器包括设置在电介质体中的C形第一电极，布置在第一电极的上侧和下侧的第二和第三电极，从第一电极朝向侧表面延伸的信号连接图案 以及从第一，第二和第三电极延伸到电介质体的侧表面的接地连接图案，以在接地连接图案和信号连接图案之间提供预定的阻抗。 介质谐振器被布置成具有与电路板的主表面平行的第二和第三电极，并且第二电极被向上暴露。 第二电极部分在预定位置处的一部分适于修整以调节介质谐振器的谐振频率，从而调节压控振荡器的振荡器频率。 介质谐振器可以小型化，而不降低其Q值。

Patent Agency Ranking