公开(公告)号：US5912602A

公开(公告)日：1999-06-15

申请号：US731752

申请日：1996-10-18

申请人： Michiaki Takagi ,  Shigeo Kanna ,  Eishi Momosaki

发明人： Michiaki Takagi ,  Shigeo Kanna ,  Eishi Momosaki

IPC分类号： H03H9/145 ,  H03H9/02 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/6433 ,  H03H9/02834 ,  H03H9/14594 ,  H03H9/6463 ,  H03H9/14547

摘要： A high-precision surface acoustic wave (SAW) device improves the frequency-temperature characteristics of a conventional surface acoustic wave device several-fold. In this high-precision surface acoustic wave device, two one-port SAW resonators, or two two-port SAW resonators, alternatively, two one-port-resonator-type, two-port-resonator-type or transversal-type filters are placed in parallel with each other. Further, these resonators or filters are excited and are elastically coupled to each other in such a way as to be in an oblique symmetry mode. Moreover, the frequency-temperature characteristics of the two elements are made to differ from each other. Furthermore, a flat frequency-temperature characteristic, which cannot be realized by a single element, is realized by being synthesized from the frequency-temperature characteristics of the two elements.

摘要翻译： 高精度表面声波（SAW）器件将常规声表面波器件的频率 - 温度特性提高了几倍。 在这种高精度表面声波装置中，放置了两个单口SAW谐振器或两个两端口SAW谐振器，或者两个单端口谐振器型，两端口谐振器型或横向型滤波器 彼此平行。 此外，这些谐振器或滤波器被激励并且以使其处于倾斜对称模式的方式彼此弹性耦合。 此外，使两个元件的频率 - 温度特性彼此不同。 此外，通过从两个元件的频率 - 温度特性合成，实现了通过单个元件不能实现的平坦的频率 - 温度特性。

公开(公告)号：US5895996A

公开(公告)日：1999-04-20

申请号：US647921

申请日：1996-05-29

申请人： Michiaki Takagi ,  Eishi Momosaki ,  Yoshinori Ikusaka

发明人： Michiaki Takagi ,  Eishi Momosaki ,  Yoshinori Ikusaka

IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/25 ,  H01L41/08

CPC分类号： H03H9/25 ,  H03H9/02543 ,  H03H9/02551 ,  H03H9/02834 ,  H03H9/02858 ,  H03H9/14547 ,  H03H9/14594

摘要： A SAW device utilizing elastic surface waves, in which the Q value indicating resonance sharpness is high, and which presents excellent frequency temperature characteristics and short-term frequency stability. In a SAW device according to the present invention, an IDT and two reflectors are in parallel in the propagation direction of the phase of the elastic surface waves. The IDT and reflectors are disposed to cover the power flow direction, which is the propagation direction of energy of the elastic surface waves, whereby the energy of the elastic surface waves is efficiently confined. Moreover, it becomes possible to manufacture the SAW device utilizing a piezoelectric crystal in which angle .theta. and angle .psi. indicating excellent frequency temperature characteristics are 25 to 45 degrees and 40 to 47 degrees, respectively. It is also possible to manufacture the SAW device utilizing a piezoelectric crystal where angle .psi. is related to angle .theta. such that .theta.=2.775.times.(.psi.-32.5)+6.5 where angle .theta. is in the range of 4 to 7 degrees.

摘要翻译： PCT No.PCT / JP95 / 00312 Sec。 371日期：1996年5月29日 102（e）日期1996年5月29日PCT提交1995年2月28日PCT公布。 公开号WO96 / 10293 日期1996年4月4日一种利用弹性表面波的SAW器件，其中表示谐振锐度的Q值高，并且具有优异的频率温度特性和短期频率稳定性。 在根据本发明的SAW器件中，IDT和两个反射器在弹性表面波的相位的传播方向上是平行的。 IDT和反射器被设置为覆盖作为弹性表面波的能量的传播方向的功率流动方向，由此弹性表面波的能量被有效地限制。 此外，可以使用其中分别表示优异的频率温度特性的角度θ和角度psi分别为25至45度和40至47度的压电晶体来制造SAW器件。 也可以制造使用角度psi与角度θ相关的压电晶体的SAW器件，使θ= 2.775×（psi-32.5）+ 6.5，其中角度θ在4至7度的范围内。

公开(公告)号：US4468634A

公开(公告)日：1984-08-28

申请号：US322319

申请日：1981-11-17

申请人： Michiaki Takagi ,  Eishi Momosaki

发明人： Michiaki Takagi ,  Eishi Momosaki

IPC分类号： G01K7/32 ,  H03B5/36 ,  H03B25/00

CPC分类号： G01K7/32 ,  Y10S331/03

摘要： An oscillator circuit for simultaneously outputting two frequency signals comprises a single resonator vibrating in two modes at different frequencies, an amplitude modulating circuit for modulating one of said two frequencies with a third frequency, a feedback circuit receiving the output of the amplitude modulating circuit, a detector demodulating the amplitude modulated signal, the demodulated signal being the third frequency used to modulate the output of the resonator. The two frequencies of the resonator are close together in value and the third frequency signal is the difference in frequency of the two resonator outputs. Circuit outputs are one resonator frequency and the difference frequency.

摘要翻译： 用于同时输出两个频率信号的振荡器电路包括以不同频率以两种模式振动的单个谐振器，用于以第三频率调制所述两个频率之一的幅度调制电路，接收幅度调制电路的输出的反馈电路， 检测器解调幅度调制信号，解调信号是用于调制谐振器的输出的第三频率。 谐振器的两个频率值接近，第三频率信号是两个谐振器输出的频率差。 电路输出是一个谐振器频率和差频。

公开(公告)号：US4377765A

公开(公告)日：1983-03-22

申请号：US240045

申请日：1981-03-03

申请人： Shigeru Kogure ,  Eishi Momosaki ,  Minoru Inoue

发明人： Shigeru Kogure ,  Eishi Momosaki ,  Minoru Inoue

IPC分类号： H03H9/215 ,  H01L41/08

CPC分类号： H03H9/215 ,  Y10T29/42

摘要： A mode coupled tuning fork type quartz crystal vibrator utilizing two different vibrational modes is provided. The vibrator includes at least one electrode on each tuning fork arm for adjusting the resonant frequency of the main vibration and an electrode for adjusting the frequency-temperature characteristic of the vibrator. The main vibration is in the flexural mode (F.sub.1) and the sub-vibration is in the torsional mode (T.sub.0). The resonant frequency of the first overtone in the flextural mode is designated by f.sub.F and the resonant frequency of the fundamental vibration in the torsional mode is denoted by f.sub.T. The difference between f.sub.F and f.sub.T defined as .DELTA.f=f.sub.F -f.sub.T determines the frequency-temperature characteristics of the mode coupled vibrator.The electrodes for adjusting f.sub.F are substantially triangular in shape and the electrodes for adjusting f.sub.T are substantially rectangular in shape. These electrodes are disposed at positions near the top of each tuning fork arm and on both principal surfaces of the vibrators. The resonant frequencies are adjusted by removing a portion of electrode material or adding a strip of metal to the electrode. Preselected oscillation frequency and frequency-temperature characteristics in the form of a cubic curve at ambient temperatures are obtained by first adjusting .DELTA.f to a preselected value .DELTA.f.sub.O and then adjusting f.sub.F to a preselected value f.sub.F0 at the same time maintaining .DELTA.f at the value .DELTA.f.sub.0.

摘要翻译： 提供了利用两种不同振动模式的模式耦合音叉型石英振子。 振子包括用于调节主振动的谐振频率的每个音叉臂上的至少一个电极和用于调节振动器的频率 - 温度特性的电极。 主振动处于弯曲模式（F1），副振动处于扭转模式（T0）。 弯曲模式中第一个泛音的谐振频率由fF表示，扭转模式下的基波振动的谐振频率由fT表示。 定义为DELTA f = fF-fT的fF和fT之间的差异决定了模式耦合振动器的频率 - 温度特性。 用于调节fF的电极的形状基本上是三角形，并且用于调节fT的电极基本上是矩形的。 这些电极设置在靠近每个音叉臂顶部的位置和振动器的两个主表面上。 通过去除电极材料的一部分或向电极添加金属条来调节谐振频率。 通过首先将DELTA f调整为预选值DELTA fO，然后将fF调整到预选值fF0，同时将DELTA f保持在该值，从而获得环境温度下三次曲线形式的预选振荡频率和频率 - 温度特性 DELTA f0。

公开(公告)号：US4356425A

公开(公告)日：1982-10-26

申请号：US122870

申请日：1980-02-20

申请人： Shigeru Kogure ,  Eishi Momosaki ,  Minoru Inoue

发明人： Shigeru Kogure ,  Eishi Momosaki ,  Minoru Inoue

IPC分类号： G04F5/06 ,  H03H9/13 ,  H03H9/19 ,  H03H9/215 ,  H01L41/08

CPC分类号： H03H9/215 ,  G04F5/063

摘要： A tuning fork type quartz crystal vibrator has electrodes formed on its surfaces with the electrodes being divided into separated portions along the length of the tuning fork arms such that opposite electric fields and charges are juxtaposed in the same arm. Dividing the electrode at a location along the tuning fork arms where strains induced during vibration reverse direction, enhances the ability to induce vibrations. A low resonant resistance and high capacity ratio are provided for an overtone frequency of flexual vibrations.

摘要翻译： 音叉型石英晶体振子具有形成在其表面上的电极，电极沿着音叉臂的长度分成分离的部分，使得相反的电场和电荷并置在同一个臂中。 在振动反向引起的应变下，沿着音叉臂的位置分割电极，增强了引起振动的能力。 提供低谐振电阻和高容量比，用于柔性振动的泛音频率。

公开(公告)号：US4320320A

公开(公告)日：1982-03-16

申请号：US42732

申请日：1979-05-29

申请人： Eishi Momosaki ,  Shigeru Kogure ,  Minoru Inoue

发明人： Eishi Momosaki ,  Shigeru Kogure ,  Minoru Inoue

IPC分类号： H03H3/04 ,  H03H9/215 ,  H01L41/08

CPC分类号： H03H3/04 ,  H03H9/215

摘要： Cutting a quartz tuning fork crystal vibrator at a preferred angle and with a thickness which establishes a close coupled relationship between the flexural and torsional modes of vibration of the arms or tines produces a vibrator having a highly favorable cubic frequency temperature characteristic at predetermined frequencies. Weight added to the ends of the vibrating tines reduces the frequency of both flexural and torsional vibration, whereas weight added at nodal points in the flexural vibration primarily reduces only the torsional vibrational mode. Accordingly, a wide range of frequency adjustments is possible. Deviations from the desired crystal operating frequency due to manufacturing variances are adjustable by sequential weight modifications while the desirable cubic temperature characteristic is retained. High accuracy over a wide temperature range permits operation in oscillator circuits at relatively low frequencies and with attendant low power consumption. Close coupling between vibrational modes occurs when the difference between the flexural and torsional frequencies is .ltoreq.0.15 of the flexural frequency. The principles for dimensioning the crystal, and adjusting thickness and weight, are applicable to both fundamental and overtone frequencies.

摘要翻译： 以优选的角度切割石英音叉晶体振子，并且具有在臂或尖的振动的弯曲和扭转模式之间建立紧密耦合关系的厚度产生在预定频率下具有非常有利的立方频率温度特性的振动器。 添加到振动尖端的重量减少了弯曲和扭转振动的频率，而在弯曲振动中的节点处的加权主要仅减小扭转振动模式。 因此，可以进行宽范围的频率调整。 由于制造差异而与期望的晶体工作频率的偏差可通过连续重量修改来调整，而保留理想的立方体温度特性。 在宽温度范围内的高精度允许振荡器电路在较低频率下工作，并具有低功耗。 当弯曲和扭转频率之间的差值为弯曲频率的0.15％时，发生振动模式之间的紧密耦合。 晶体尺寸和调整厚度和重量的原理适用于基波和泛音频率。

公开(公告)号：US4035674A

公开(公告)日：1977-07-12

申请号：US629951

申请日：1975-11-07

申请人： Kikuo Oguchi ,  Ogata Toshiaki ,  Eishi Momosaki

发明人： Kikuo Oguchi ,  Ogata Toshiaki ,  Eishi Momosaki

IPC分类号： G04F5/06 ,  H03H9/09 ,  H03H9/19 ,  H01L41/04

CPC分类号： H03H9/19 ,  G04F5/063 ,  H03H9/09

摘要： Quartz crystal vibrators of small size which vibrate in the shear mode consist essentially of a vibrating portion and a support portion, both of which lie in the same plane. As a consequence, they are readily manufactured on a production basis and can be shaped so as to minimize the effect of variation in ambient temperature.

摘要翻译： 在剪切模式下振动的小尺寸的石英晶体振动器基本上由振动部分和支撑部分组成，两者都在同一平面内。 因此，它们容易在生产的基础上制造，并且可以成形为使得环境温度变化的影响最小化。

公开(公告)号：US4418299A

公开(公告)日：1983-11-29

申请号：US427047

申请日：1982-09-29

申请人： Eishi Momosaki

发明人： Eishi Momosaki

IPC分类号： G04F5/06 ,  H03H3/02 ,  H03H9/05 ,  H03H9/19 ,  H01L41/08

CPC分类号： H03H9/0533 ,  G04F5/063 ,  H03H9/0595

摘要： A miniaturized face-shear mode quartz crystal vibrator and method of manufacture is provided. The vibrator is formed from a Y-cut quartz crystal plate less than 500 .mu.m thick which has been rotated between 45.degree. to 55.degree. about the X-axis. A plurality of vibrators are formed by depositing a thin metallic film on the two opposed planar surfaces of the plate, selectively etching portions of the metallic films and dissolving the uncoated portions of the plate. The metallic films become the vibrator electrode.

摘要翻译： 提供一种小型化的面剪切模式石英晶体振动器及其制造方法。 振动器由小于500μm厚的Y切割石英晶片形成，其相对于X轴旋转45°至55°。 通过在板的两个相对的平面表面上沉积薄金属膜来形成多个振动器，选择性地蚀刻金属膜的部分并溶解板的未涂覆部分。 金属膜成为振动电极。