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    • 1. 发明专利
    • Piezoelectric vibration device
    • 压电振动装置
    • JP2012023756A
    • 2012-02-02
    • JP2011197264
    • 2011-09-09
    • Koichi Hirama宏一 平間
    • HIRAMA KOICHI
    • H03H9/56H01L41/09H01L41/18H03B5/30H03B5/32H03H9/145H03H9/64
    • H03H9/545H03B5/30H03B5/36H03B28/00H03H9/25H03H9/56H03H9/566H03H9/6433H03H2003/0464H03J3/00
    • PROBLEM TO BE SOLVED: To provide a resonant circuit capable of controlling oscillation frequency and frequency characteristics of a filter without using a variable reactance element and a variable inductance element in a general resonant circuit, and to provide an oscillator circuit and a filter using the resonant circuit.SOLUTION: A resonant circuit combined with a piezoelectric transducer such as a crystal oscillator, a coil, and a capacitor, or elements equivalent to them comprises an oscillator circuit and a filter capable of freely adjusting frequency characteristics thereof using a phenomenon capable of varying an antiresonant frequency of the whole of a composite resonant circuit when combining at least two resonant circuits with mutually different resonant frequencies to independently change an excitation current or a voltage of each resonant circuit.
    • 要解决的问题:提供一种能够在一般谐振电路中不使用可变电抗元件和可变电感元件的情况下控制滤波器的振荡频率和频率特性的谐振电路,并提供振荡器电路和滤波器 使用谐振电路。 解决方案:与诸如晶体振荡器,线圈和电容器的压电换能器或与其相当的元件组合的谐振电路包括振荡器电路和能够使用能够 当组合具有相互不同谐振频率的至少两个谐振电路以独立地改变每个谐振电路的激励电流或电压时,改变复合谐振电路整体的反谐振频率。 版权所有(C)2012,JPO&INPIT
    • 2. 发明专利
    • Composite resonance type converter circuit
    • 复合谐振型转换器电路
    • JP2009147698A
    • 2009-07-02
    • JP2007323290
    • 2007-12-14
    • Koichi Hirama宏一 平間
    • HIRAMA KOICHI
    • H03H7/075
    • PROBLEM TO BE SOLVED: To obtain a composite resonance type converter circuit capable of varying a frequency of maximum conversion efficiency over a wide frequency adaptive domain and a wide frequency variable range.
      SOLUTION: There are provided a resonance circuit including a resonance circuit input terminal and a reference terminal; a subordinate connection conversion circuit comprising at least one set of slave connection terminal groups each constituted of four terminals; at least two subordinate connection circuit input terminals; a phase shift circuit which performs phase shift to adjust a phase relationship upon an input signal to the two subordinate connection input terminals; and an active terminal connected to the phase shift circuit, wherein the subordinate connection conversion circuit distributes a sum or a difference of currents inputted to the resonance circuit input terminals to the subordinate connection terminal groups.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:获得能够在宽频率自适应域和宽频率可变范围内改变最大转换效率的频率的复合谐振型转换器电路。 解决方案:提供一种包括谐振电路输入端和参考端的谐振电路; 下属连接转换电路,包括由四个终端构成的至少一组从属连接终端组; 至少两个从属连接电路输入端子; 相移电路,对相对于所述两个下级连接输入端子的输入信号进行相移调整相位关系; 以及连接到所述相移电路的有源端子,其中所述从属连接转换电路将输入到所述谐振电路输入端子的电流的和或差分布到所述下级连接端子组。 版权所有(C)2009,JPO&INPIT
    • 3. 发明专利
    • Composite resonant circuit, and oscillation circuit using same
    • 复合谐振电路和振荡电路
    • JP2007295256A
    • 2007-11-08
    • JP2006120570
    • 2006-04-25
    • Koichi Hirama宏一 平間
    • HIRAMA KOICHI
    • H03B5/32
    • PROBLEM TO BE SOLVED: To provide a resonant circuit which is capable of controlling an oscillation frequency and frequency characteristics of a filter without using a variable capacitance element or a variable inductance element in a general resonant circuit, and to provide an oscillation circuit, a filter, or the like using the resonant circuit.
      SOLUTION: In the oscillation circuit, positive and negative feedback lines independent of each other are provided between an input and an output of an amplifier, and an anti-resonant circuit having variable anti-resonant frequency characteristics is included in the negative feedback line, and a variable band amplifier which follows changes in anti-resonant frequency of the anti-resonant circuit and has a maximum gain at a center frequency is included in the positive feedback line.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种能够在一般谐振电路中不使用可变电容元件或可变电感元件的情况下控制滤波器的振荡频率和频率特性的谐振电路,并提供振荡电路 ,滤波器等使用谐振电路。 解决方案:在振荡电路中,在放大器的输入和输出之间提供彼此独立的正和负反馈线,并且具有可变反谐振频率特性的反谐振电路被包括在负反馈 并且在正反馈线中包括随着反谐振电路的反谐振频率变化并且在中心频率具有最大增益的可变频带放大器。 版权所有(C)2008,JPO&INPIT