公开(公告)号：US4196407A

公开(公告)日：1980-04-01

申请号：US962904

申请日：1978-11-22

申请人： Kimio Masaie ,  Yoshio Murata

发明人： Kimio Masaie ,  Yoshio Murata

IPC分类号： H03H9/56 ,  H03H9/54 ,  H03H9/60 ,  H03H9/26 ,  H03H9/06 ,  H03H9/32

CPC分类号： H03H9/545

摘要： A piezoelectric ceramic multiple mode filter exploiting the energy trapping theory, wherein the resistance between the ground electrode and the electrode for external connection is between several ohms and several tens of ohms. In a preferred embodiment, the connection lead between the ground electrode and the electrode for external connection is designed to provide the necessary resistance.

摘要翻译： 利用能量捕获理论的压电陶瓷多模式滤波器，其中接地电极和用于外部连接的电极之间的电阻在几欧姆和几十欧姆之间。 在优选实施例中，接地电极和用于外部连接的电极之间的连接引线被设计成提供必要的电阻。

公开(公告)号：US4144501A

公开(公告)日：1979-03-13

申请号：US880013

申请日：1978-02-21

申请人： Kazuya Togawa ,  Kimio Masaie

发明人： Kazuya Togawa ,  Kimio Masaie

IPC分类号： H03D3/06 ,  H03D3/16 ,  H03D3/18 ,  H03H9/02

CPC分类号： H03D3/18

摘要： An improved quadrature detector for producing a frequency demodulated signal employing a low reactance phase shifter. A quadrature FM detector demodulates a frequency modulated signal by phase comparison of a signal directly from the limiter with a signal coupled through a multi-mode resonator tank circuit and a 90.degree. phase shift circuit. In the prior art the 90.degree. phase shift circuit includes a series coupled capacitor having a high reactance which tends to attenuate the signal and decrease the low distortion bandwidth. Accordingly in the present invention a coil is connected across the input or output terminals of the multi-mode tank circuit thereby enabling the phase shift circuit to employ a low reactance capacitor yielding an improved signal level and low distortion bandwidth.

摘要翻译： 一种改进的正交检波器，用于产生采用低电抗移相器的频率解调信号。 正交FM检测器通过直接来自限幅器的信号与通过多模谐振器谐振器电路和90°相移电路耦合的信号进行相位比较来解调调制信号。 在现有技术中，90°相移电路包括具有高电抗的串联耦合电容器，其倾向于衰减信号并降低低失真带宽。 因此，在本发明中，线圈连接在多模式电路的输入或输出端上，从而使得相移电路能够采用低电抗电容，从而产生改进的信号电平和低失真带宽。

公开(公告)号：US5223762A

公开(公告)日：1993-06-29

申请号：US816291

申请日：1991-12-27

申请人： Kimio Masaie ,  Haruo Morii

发明人： Kimio Masaie ,  Haruo Morii

IPC分类号： H03H9/02 ,  H03H9/64

CPC分类号： H03H9/6433 ,  H03H9/14591 ,  H03H9/6453 ,  H03H9/6463 ,  H03H9/6476

摘要： Two surface acoustic wave resonators are transversely formed with a minute spacing between them on a piezoelectric substrate. Said two surface acoustic wave resonators are oppositely formed to each other to become line-symmetry. Each of the surface acoustic wave resonator comprises an interdigital transducer and reflectors formed on its both sides. An input terminal and an output terminal are lead from the corresponding interdigital transducer. Between the input and the output terminals, an electrostatic capacity is bridged. The electrostatic capacity is formed on, for example, a piezoelectric substrate. In this case, the electrostatic capacity may be formed by alternately interdigitating each part of comb-like electrodes of the two interdigital transducers. Furthermore, the electrostatic capacity may be formed by alternately interdigitating both parts of the two reflector electrodes.

摘要翻译： 两个表面声波谐振器在压电基板上横向形成有它们之间的微小的间隔。 所述两个表面声波谐振器彼此相对地形成为线对称。 每个声表面波谐振器包括叉指式换能器和在其两侧形成的反射器。 输入端子和输出端子从相应的叉指式换能器引出。 在输入和输出端之间，静电电容桥接。 静电电容形成在例如压电基板上。 在这种情况下，静电电容可以通过交替地交叉指向两个叉指式换能器的梳状电极的每一部分而形成。 此外，静电电容可以通过交替地交叉指向两个反射器电极的两部分而形成。

公开(公告)号：US5351021A

公开(公告)日：1994-09-27

申请号：US088488

申请日：1993-07-06

申请人： Kimio Masaie ,  Minoru Sakamoto

发明人： Kimio Masaie ,  Minoru Sakamoto

IPC分类号： H03H9/02 ,  H03H9/58 ,  H03H9/60

CPC分类号： H03H9/581 ,  H03H9/02141 ,  H03H9/605

摘要： In a ladder-type piezoelectric filter having a series arm constituted by a plurality of series resonators connected in series and parallel arms respectively constituted by parallel resonators, each of the resonators being constructed using a piezoelectric plate, the direction of polarization of the piezoelectric plate of the series resonator arranged in at least one end of the series arm and the direction of polarization of the piezoelectric plate of the parallel resonator connected to the series resonator arranged in at least one end of the series arm are the same as seen from the side of a node of the series resonator arranged in the end and the parallel resonator connected to the series resonator.

摘要翻译： 在具有由串联连接的多个串联谐振器和分别由并联谐振器构成的并联臂构成的串联臂的梯形压电滤波器中，每个谐振器使用压电板构成，压电板的极化方向 布置在串联臂的至少一端的串联谐振器和连接到布置在串联臂的至少一端的串联谐振器的并联谐振器的压电板的极化方向与从侧面观察到的相同 布置在端部的串联谐振器的节点和连接到串联谐振器的并联谐振器。

公开(公告)号：US4287493A

公开(公告)日：1981-09-01

申请号：US113449

申请日：1980-01-21

申请人： Kimio Masaie

发明人： Kimio Masaie

IPC分类号： H03H9/56 ,  H03H9/60 ,  H03H9/205

CPC分类号： H03H9/566

摘要： A piezoelectric filter for use in electrical and electronic equipment which includes a substrate of piezoelectric material, and electrode members provided on first and second surfaces of the substrate so as to form at least one set of resonator including a multi-mode resonator and a single resonator of the thickness-vibration, energy-trapping type. The multi-mode resonator serves as a series resonance element of a ladder type filter through utilization of the oblique or anti-symmetrical mode resonance of the multi-mode resonator, while the single resonator is used as a parallel resonance element of the ladder type filter.

摘要翻译： 一种用于电气和电子设备的压电滤波器，其包括压电材料的基板，以及设置在所述基板的第一和第二表面上的电极部件，以便形成至少一组谐振器，所述谐振器包括多模谐振器和单谐振器 的厚度振动，能量捕获型。 多模谐振器通过利用多模式谐振器的倾斜或反对称模式谐振器作为梯形滤波器的串联谐振元件，而单个谐振器用作梯形滤波器的并联谐振元件 。