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    RESONATOR, PHASE-LOCKED LOOP, AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    23.
    发明申请
    RESONATOR, PHASE-LOCKED LOOP, AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE 有权
    谐振器，相位锁定环路和半导体集成电路器件

    公开(公告)号：US20160315627A1

    公开(公告)日：2016-10-27

    申请号：US14901914

    申请日：2013-11-07

    Applicant: HITACHI, LTD.

    Inventor： Takashi KAWAMOTO

    IPC: H03L7/10 ,  H03L7/083 ,  H03L7/089 ,  H03B5/12 ,  H03L7/099

    CPC classification number: H03L7/102 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1265 ,  H03B2200/0038 ,  H03B2201/011 ,  H03L7/083 ,  H03L7/0891 ,  H03L7/099

    Abstract: A resonator is supplied with voltage from a constant-voltage source, and the constant-voltage source outputs output voltage adjusted by a voltage adjustment signal to the resonator. The resonator outputs a clock signal having a frequency varied by varying capacitance in accordance with a received control signal and a frequency adjustment signal, and a frequency of the clock signal is varied by voltage output from the constant-voltage source.

    Abstract translation: 谐振器由恒压源提供电压，恒压源通过电压调节信号将输出电压输出到谐振器。 谐振器根据接收到的控制信号和频率调整信号输出具有由变化的电容变化的频率的时钟信号，并且通过从恒定电压源输出的电压来改变时钟信号的频率。

    Low distortion impedance selection and tunable impedance circuits
    24.
    发明授权
    Low distortion impedance selection and tunable impedance circuits 有权
    低失真阻抗选择和可调阻抗电路

    公开(公告)号：US09350321B2

    公开(公告)日：2016-05-24

    申请号：US13212762

    申请日：2011-08-18

    Applicant: Hajime Shibata

    Inventor： Hajime Shibata

    IPC: H03B5/12 ,  H03C3/09 ,  H03H11/24 ,  H03B5/00

    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。

    Flip-chip MMIC oscillator assembly with off-chip coplanar waveguide resonant inductor
    27.
    发明授权
    Flip-chip MMIC oscillator assembly with off-chip coplanar waveguide resonant inductor 失效
    倒装芯片MMIC振荡器组件，具有片外共面波导谐振电感

    公开(公告)号：US5087896A

    公开(公告)日：1992-02-11

    申请号：US641954

    申请日：1991-01-16

    Applicant: Cheng P. Wen ,  Gregory S. Mendolia ,  Mario Siracusa ,  Joseph J. Maieron ,  William D. Higdon

    Inventor： Cheng P. Wen ,  Gregory S. Mendolia ,  Mario Siracusa ,  Joseph J. Maieron ,  William D. Higdon

    IPC: H03B1/00 ,  H03B5/18

    CPC classification number: H03B5/1852 ,  H03B2200/0086 ,  H03B2201/011 ,  H03B2201/014 ,  H03B2201/02 ,  Y10T29/49004

    Abstract: A coplanar waveguide based microwave monolithic integrated circuit (MMIC) oscillator chip (14) having an active oscillator element (16) and a resonant capacitor (18) formed thereon is flip-chip mounted on a dielectric substrate (12). A resonant inductor (22) is formed on the substrate (12) and interconnected with the resonant capacitor (18) to form a high Q-factor resonant circuit for the oscillator (10). The resonant inductor (22) includes a shorted coplanar waveguide section (24) consisting of first and second ground strips (24b,24c), and a conductor strip (24a) extending between the first and second ground strips (24b,24c) in parallel relation thereto and being separated therefrom by first and second spaces (26a,26b) respectively. A shorting strip (24d) electrically interconnects adjacent ends of the conductor strip (24a) and first and second ground strips (24b,24c) respectively. A dielectric film (34) may be formed over at least adjacent portions of the conductor strip (24 a) and first and second ground strips (24b,24c). The resonant inductor (22) is adjusted to provide a predetermined resonant frequency for the oscillator (10) by using a laser (40) to remove part of the dielectric film (34) in the first and second spaces (26a,26b) for fine adjustment, and/or to remove part of the shorting strip (24d) at the ends of the first and second spaces (26a,26b) for coarse adjustment.

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