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    • 3. 发明授权
    • Piezoelectric resonator
    • 压电谐振器
    • US5065066A
    • 1991-11-12
    • US554783
    • 1990-07-18
    • Hiroshi NakataniMasao Gamo
    • Hiroshi NakataniMasao Gamo
    • H03H9/13H03H9/17
    • H03H9/178
    • A piezoelectric resonator of an energy-trapped type utilizing a second harmonic wave of the thickness-extensional vibration mode, in which an inner electrode is formed in a position at a height around the center of a piezoelectric substrate in the direction of thickness, outer electrodes are formed on both major surfaces of the piezoelectric substrate so as to be opposed to the inner electrode through a piezoelectric substrate portion, and the dimension of at least one of the outer electrodes in the direction of the length of the inner electrode is made smaller than the dimension of the outer electrode in the direction of the width of the inner electrode.
    • 一种利用厚度 - 延伸振动模式的二次谐波的能量捕获型压电谐振器,其中内部电极形成在厚度方向上在压电基板的中心周围的高度的位置,外部电极 形成在压电基板的两个主表面上,以通过压电基板部分与内部电极相对,并且将外部电极中的至少一个在内部电极的长度方向上的尺寸设定为小于 外部电极在内部电极的宽度方向上的尺寸。
    • 5. 发明授权
    • 3-terminal oscillating element and oscillator employing the same
    • 3端振荡元件和采用它的振荡器
    • US4628285A
    • 1986-12-09
    • US686010
    • 1984-12-27
    • Hiroshi NakataniJiro InoueMasashige Miyamori
    • Hiroshi NakataniJiro InoueMasashige Miyamori
    • H03B5/32H03H9/17
    • H03B5/323
    • A 3-terminal oscillating element has a square plate-like piezoelectric body, first and second electrodes provided on one surface of the piezoelectric body and a common electrode provided on the other surface of the piezoelectric body. The piezoelectric body is polarized in one direction between the first and common electrodes and in the opposite direction between the second and common electrode. The 3-terminal oscillating element, when provided in place of a combination of 2-terminal oscillating element and two externally provided capacitors C.sub.1 and C.sub.2 in a Colpitts circuit, substantially satisfies the following equations: ##EQU1## wherein C.sub.01 is an electrostatic capacitance between the first electrode and the counter electrode, C.sub.02 is an electrostatic capacitance between the second electrode and the counter electrode, and n is an transformation ratio of an ideal transformer; and ##EQU2## wherein S.sub.1 and S.sub.2 are areas of first and second electrodes, respectively.
    • 三端振荡元件具有方形板状压电体,设置在压电体的一个表面上的第一和第二电极以及设置在压电体的另一表面上的公共电极。 压电体在一个方向上在第一和公共电极之间并且在第二和公共电极之间的相反方向上被极化。 当在Colpitts电路中提供代替2端振荡元件和两个外部提供的电容器C1和C2的组合的三端振荡元件基本上满足以下等式:其中C01是静电电容 第一电极和对电极,CO 2是第二电极和对电极之间的静电电容,n是理想变压器的变比; 和,其中S1和S2分别是第一和第二电极的区域。