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    Voltage-controlled oscillator
    291.
    发明专利
    Voltage-controlled oscillator 有权
    电压控制振荡器

    公开(公告)号：JP2006211249A

    公开(公告)日：2006-08-10

    申请号：JP2005020028

    申请日：2005-01-27

    Applicant: Matsushita Electric Ind Co Ltd ,  松下電器産業株式会社

    Inventor： MATSUURA JUNICHI

    IPC: H03B5/32

    CPC classification number: H03B5/366 ,  H03B2201/0208

    Abstract: PROBLEM TO BE SOLVED: To provide a voltage-controlled oscillator capable of controlling a threshold voltage of MOS transistors independently of a temperature characteristic compensation signal and an external voltage frequency control signal. SOLUTION: The series connection of DC cut capacitors 9, 10 and a variable capacitor (MOS transistors 4, 5) is configured between one terminal and the other terminal of a crystal oscillator 3 for a load capacitance of the oscillator circuit comprising a feedback resistor 1, an inverter 2, and the crystal oscillator 3, by using a static capacitance produced between drain terminals and gate terminals of the MOS transistors 4, 5 whose source terminals and back-gate terminals are short-circuited as the variable capacitance. For example, the voltage-controlled oscillator is configured such that the external voltage frequency control signal is given to the drain terminals via high frequency eliminating resistors 11, 12, and a threshold voltage control signal of the MOS transistors 4, 5 is given to the source-back gate terminals via high frequency eliminating resistors 7, 8, and a signal resulting from superimposing a temperature characteristic compensation signal on the threshold voltage control signal of the MOS transistors 4, 5 is given to the gate terminals. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：提供一种能够独立于温度特性补偿信号和外部电压频率控制信号来控制MOS晶体管的阈值电压的压控振荡器。 解决方案：对于用于振荡器电路的负载电容的直流截止电容器9,10和可变电容器（MOS晶体管4,5）的串联连接被配置在晶体振荡器3的一个端子和另一个端子之间，该振荡器电路的负载电容包括 反馈电阻器1，反相器2和晶体振荡器3，通过使用其源极端子和背栅极端子短路作为可变电容的MOS晶体管4,5的漏极端子和栅极端子之间产生的静态电容。 例如，压控振荡器被配置为使得外部电压频率控制信号经由高频消除电阻器11,12被提供给漏极端子，并且MOS晶体管4,5的阈值电压控制信号被给予 通过高频消除电阻器7,8的源极 - 背栅极端子和由MOS晶体管4,5的阈值电压控制信号叠加温度特性补偿信号而产生的信号被提供给栅极端子。 版权所有（C）2006，JPO＆NCIPI

    Voltage-controlled oscillator, composite module, and communication apparatus
    293.
    发明专利
    Voltage-controlled oscillator, composite module, and communication apparatus 审中-公开

    公开(公告)号：JP2004236112A

    公开(公告)日：2004-08-19

    申请号：JP2003023837

    申请日：2003-01-31

    Applicant: Murata Mfg Co Ltd ,  株式会社村田製作所

    Inventor： ARAMATA TOMOHIDE ,  OE OSAMU

    IPC: H03B1/00 ,  H03B5/12 ,  H03B5/18

    CPC classification number: H03B5/1847 ,  H03B2201/0208

    Abstract: PROBLEM TO BE SOLVED: To provide a voltage-controlled oscillator that can be downsized and provides less restriction in the layout of components and an inner layer pattern and to provide a composite module and a communication apparatus.
    SOLUTION: A resonance circuit 2 comprises: a choke coil L4; a varactor diode D1; coupling capacitors C9, C10; a resonance capacitor C11; a resonator SL2; and a bypass capacitor C12. An amplifier circuit 3 comprises: a buffer amplifier transistor Tr1; an oscillation transistor Tr2; bias resistors R1 to R4; capacitors C4 to C7; bypass capacitors C1, C3, a coupling capacitor C2; a choke coil SL1; a resonance capacitor C8; and a resonance inductor SL3 acting as an inductive element. The bias resistor R3 electrically connected between the base of the oscillation transistor Tr2 and ground is connected to ground via the resonator SL3 whose one end is electrically connected to ground.
    COPYRIGHT: (C)2004,JPO&NCIPI

    Oscillating circuit
    297.
    发明专利
    Oscillating circuit 失效
    振荡电路

    公开(公告)号：JPS58200606A

    公开(公告)日：1983-11-22

    申请号：JP8369182

    申请日：1982-05-17

    Applicant: Sharp Corp

    Inventor： MATSUURA SHIYUUJI

    IPC: H03B1/00 ,  H03B5/12

    CPC classification number: H03B5/1231 ,  H03B5/1203 ,  H03B5/1243 ,  H03B2200/0006 ,  H03B2200/0008 ,  H03B2200/004 ,  H03B2200/0048 ,  H03B2200/0056 ,  H03B2200/0086 ,  H03B2201/0208

    Abstract: PURPOSE: To attain stable oscillation over a wide frequency range, by adding a series circuit of a varactor diode and a capacitor to a clapping capacitor of a modified Colpitts oscillating circuit.
    CONSTITUTION: The varactor diode D
    1 and a DC blocking capacitor C
    5 are connected at a connecting point P mutually. The series circuit consisting of a varactor diode D
    3 and a DC blocking capacitor C
    11 is added between this connecting point P and a point where a feedback capacitor C
    2 is connected to the clapping capacitor C
    4 . A DC voltage to the diodes D
    1 , D
    3 is supplied from a common terminal VT. Through forming like this, the effect of the Q of a tank circuit and the resonance impedance based on the capacitance change of the diode D
    1 on the intensity of the oscillation is compensated. Thus, stable oscillation is attained over a wide frequency range.
    COPYRIGHT: (C)1983,JPO&Japio

    Abstract translation: 目的：为了在宽频率范围内获得稳定的振荡，通过将变容二极管和电容器的串联电路添加到改进的Colpitts振荡电路的拍摄电容器上。 构成：变容二极管D1和隔直流电容器C5在连接点P相互连接。 在该连接点P和反馈电容器C2连接到拍摄电容器C4的点之间添加由变容二极管D3和隔直流电容器C11组成的串联电路。 从二极管D1，D3的直流电压从公共端子VT供给。 通过这样形成，补偿了电路的Q值和基于二极管D1的电容变化的谐振阻抗对振荡强度的影响。 因此，在宽的频率范围内获得稳定的振荡。

    Microwave semiconductor oscillator
    298.
    发明专利
    Microwave semiconductor oscillator 失效
    微波半导体振荡器

    公开(公告)号：JPS5772403A

    公开(公告)日：1982-05-06

    申请号：JP14868780

    申请日：1980-10-22

    Applicant: Mitsubishi Electric Corp

    Inventor： MORI TETSUO ,  SAWANO HIROSHI

    IPC: H03B9/12 ,  H03B1/00 ,  H03B5/18

    CPC classification number: H03B5/1876 ,  H03B5/1852 ,  H03B2201/0208

    Abstract: PURPOSE:To modulate a frequency easily, by connecting a varactor diode from the output of an oscillation amplifiers toward the input. CONSTITUTION:Oscillation is performed by the positive feedback from a drain D in the output side of an oscillation amplifier 6 to a gate G in the input side through a dielectric resonator 7. A varactor diode 11 is provided between the input side and the output side in parallel with this positive feedback path. A bias voltage is given as a modulation signal to this varactor diode 11 to change the junction capacity, thereby changing the resonance frequency to modulate the frequency.

    Abstract translation: 目的：通过将变容二极管从振荡放大器的输出端连接到输入端，容易调制频率。 构成：通过介质谐振器7通过从振荡放大器6的输出侧的漏极D的正反馈到输入侧的栅极G进行振荡。变容二极管11设置在输入侧和输出侧 与这个正反馈路径并行。 偏置电压作为调制信号被提供给变容二极管11以改变结电容，由此改变谐振频率以调制频率。

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