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    TUNABLE RESONANT CIRCUIT IN AN INTEGRATED CIRCUIT
    61.
    发明公开
    TUNABLE RESONANT CIRCUIT IN AN INTEGRATED CIRCUIT 有权
    可调谐的谐振电路是集成电路

    公开(公告)号：EP2628241A1

    公开(公告)日：2013-08-21

    申请号：EP11754596.2

    申请日：2011-08-31

    Applicant: Xilinx, Inc.

    Inventor： UPADHYAYA, Parag ,  KIREEV, Vassili

    IPC: H03B5/12

    CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/124 ,  H03B5/1262 ,  H03B5/1265 ,  H03B2201/02 ,  H03B2201/0208 ,  H03B2201/0266

    Abstract: A tunable resonant circuit (102) includes first capacitors (104, 108, 216, 228, 232) and second capacitors (106, 1 10, 218, 230, 234) that provide a matched capacitance between first and second electrodes of the first and second capacitors. A deep-well arrangement includes a first well (320, 326) disposed within a second well (322, 328) in a substrate (324). The first and second capacitors are each disposed on the first well. Two channel electrodes of a first transistor (120, 130) are respectively coupled to the second electrode (1 14, 304) of the first capacitor and the second electrode (1 18, 308) of the second capacitor. Two channel electrodes of a second transistor (122, 132) are respectively coupled to the second electrode of the first capacitor and to ground. Two channel electrodes of the third transistor (124, 134) are respectively coupled to the second electrode of the second capacitor and to ground. The gate electrodes (226, 314) of the first, second, and third transistors are responsive to a tuning signal (126, 136), and an inductor (144, 202) is coupled between the first electrodes (1 12, 1 16, 302, 306) of the first and second capacitors.

    Tunable oscillator arrangement
    66.
    发明公开
    Tunable oscillator arrangement 失效
    除颤器Oszillator

    公开(公告)号：EP0689283A1

    公开(公告)日：1995-12-27

    申请号：EP95303867.6

    申请日：1995-06-06

    Applicant: PLESSEY SEMICONDUCTORS LIMITED

    Inventor： Madni, Arshad

    IPC: H03B5/12 ,  H03B5/20 ,  H03B7/06 ,  G06G7/186 ,  H03F1/14

    CPC classification number: H03F3/45071 ,  H03B5/1209 ,  H03B5/1215 ,  H03B5/1221 ,  H03B5/1231 ,  H03B5/1278 ,  H03B2200/0058 ,  H03B2200/0098 ,  H03B2201/02 ,  H03F2203/45251 ,  H03F2203/45612

    Abstract: In a tunable oscillator arrangement, a frequency-determining element, e.g. a capacitor, which is part of a tank circuit associated with an active oscillator stage, is connected between an input and output of a gain-controlled amplifier, the inductor of the tank circuit being connected across the inputs of the amplifier. Advantage is taken of the Miller effect to bring about changes in effective capacitance appearing across the inputs of the amplifier in response to changes in a DC gain-control signal applied to the amplifier, these changes in capacitance in turn varying the resonant frequency of the tank circuit.

    Abstract translation: 在可调振荡器装置中，频率确定元件，例如， 作为与有源振荡器级相关联的振荡电路的一部分的电容器连接在增益控制放大器的输入和输出之间，所述振荡电路的电感器跨过放大器的输入端连接。 利用米勒效应的优点是响应于施加到放大器的直流增益控制信号的变化而导致在放大器的输入端出现的有效电容的变化，这些电容变化又改变了容器的谐振频率 电路。

    VOLTAGE SYSTEM AND OPERATING METHOD THEREOF
    69.
    发明申请
    VOLTAGE SYSTEM AND OPERATING METHOD THEREOF 审中-公开

    公开(公告)号：US20180358895A1

    公开(公告)日：2018-12-13

    申请号：US15619056

    申请日：2017-06-09

    Applicant: NANYA TECHNOLOGY CORPORATION

    Inventor： CHUAN-JEN CHANG ,  TING-SHUO HSU

    IPC: H02M3/07 ,  H03K3/03 ,  H03B5/08

    CPC classification number: H02M3/07 ,  H03B5/08 ,  H03B2200/0066 ,  H03B2201/02 ,  H03K3/0315

    Abstract: A voltage system and a method of operating a voltage system are provided. The voltage system includes an oscillator and a pump device. The oscillator is configured to provide an oscillation signal exhibiting a first frequency when a voltage level of a supply voltage is greater than a reference voltage level, and to provide the oscillation signal exhibiting a second frequency greater than the first frequency when the voltage level of the supply voltage is less than the reference voltage level. The pump device is configured to provide the supply voltage, based on a frequency of the oscillation signal provided by the oscillator, by performing a charging operation.

    Hybrid RC/Crystal Oscillator
    70.
    发明申请
    Hybrid RC/Crystal Oscillator 审中-公开

    公开(公告)号：US20170310278A1

    公开(公告)日：2017-10-26

    申请号：US15491803

    申请日：2017-04-19

    Applicant: Microchip Technology Incorporated

    Inventor： Jason Sachs

    IPC: H03B5/32 ,  H03B5/20

    CPC classification number: H03B5/32 ,  H03B5/20 ,  H03B2201/02 ,  H03L7/14

    Abstract: An oscillator includes a tunable oscillator, a phase detector circuit communicatively coupled with an output of the tunable oscillator and an input to the oscillator, and an oscillator controller circuit configured to adjust frequency of the tunable oscillator based upon phase detection between output of the tunable oscillator and output of an external resonant element received at the input to the oscillator.

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