公开(公告)号：US5751200A

公开(公告)日：1998-05-12

申请号：US487951

申请日：1995-06-05

申请人： Kazuo Yamashita ,  Yoshihiko Takeuchi ,  Masahiro Watanabe

发明人： Kazuo Yamashita ,  Yoshihiko Takeuchi ,  Masahiro Watanabe

IPC分类号： H03H3/02 ,  H03H9/09 ,  H03H9/50

CPC分类号： H03H3/02 ,  H03H9/09 ,  H03H9/50 ,  Y10T29/42

摘要： A composite longitudinal vibration mechanical filter for delivering out a supplied high-frequency signal in a predetermined frequency range includes a plurality of vibratable bodies including input and output longitudinal vibratable tuning bars with piezoelectric members superposed thereon, coupling elements by which the longitudinally vibratable tuning bars are coupled to each other, supporting elements projecting respectively from the input and output longitudinally vibratable tuning bars, and a holder to which the supporting elements are attached. At least one resonant frequency adjusting finger is disposed on at least one of the vibrational bodies. Grooves are defined in the longitudinally vibratable tuning bars at the same time that they are fabricated. The grooves extend in the direction in which the longitudinally vibratable tuning bars are longitudinally vibratable, and are shorter than the length of the longitudinally vibratable tuning bars. Through holes may instead be defined in the longitudinally vibratable tuning bars, the through holes having an opening size smaller than the wavelength of the longitudinal vibration of the longitudinally vibratable tuning bars. Piezoelectric members are fixedly superposed on the input and output longitudinally vibratable tuning bars in sandwiching relation thereto.

摘要翻译： 用于输出预定频率范围内的所提供的高频信号的复合纵向振动机械滤波器包括多个可振动体，包括输入和输出纵向振动调音杆，压电构件叠加在其上，耦合元件，纵向振动调音杆 彼此耦合，分别从输入和输出纵向可振动调音杆突出的支撑元件和支撑元件附接到的支架。 至少一个谐振频率调节指状物设置在至少一个振动体上。 在纵向可振动调音杆中同时定义槽。 凹槽沿纵向可振动调音杆纵向振动的方向延伸，并且比纵向可振动调音杆的长度短。 可以在纵向可振动调谐杆中定义通孔，通孔的开口尺寸小于纵向可振动调音杆的纵向振动的波长。 压电元件与输入和输出的纵向可振动调音杆固定重叠。

公开(公告)号：US5006824A

公开(公告)日：1991-04-09

申请号：US849093

申请日：1986-04-07

申请人： Aaron R. Paff

发明人： Aaron R. Paff

IPC分类号： H03H9/50

CPC分类号： H03H9/50

摘要： There is disclosed an improved electromechanical resonator for use in multiresonator mechanical bandpass filters. The resonator is constructed using two resonator rods attached to a ceramic transducer which is substantially centrally located. The thus-formed electromechanical resonator resonates at the desired frequency in the third torsional mode, which is characterized by three motional nodes. Support pins are attached at the two outer nodes to provide physical support, and are also used for signal and ground connections, while the ceramic is positioned on or near the center node, which maximizes the achievable electromechanical coupling. Multiresonator mechanical bandpass filters which use such third-mode electromechanical resonators in conjunction with second-mode interior resonators have improved spurious rejection.

摘要翻译： 公开了一种用于多谐振器机械带通滤波器的改进的机电谐振器。 谐振器由两个连接到陶瓷换能器的谐振器杆构成，该谐振器基本上位于中心。 这样形成的机电谐振器在第三扭转模式中以期望的频率谐振，其特征在于三个运动节点。 支撑销连接在两个外部节点处以提供物理支撑，并且还用于信号和接地连接，而陶瓷位于中心节点上或附近，从而使可实现的机电耦合最大化。 结合第二模式内部谐振器使用这种第三模式机电谐振器的多谐振荡器机械带通滤波器具有改善的杂散抑制。

公开(公告)号：US4342015A

公开(公告)日：1982-07-27

申请号：US169655

申请日：1980-07-17

申请人： Herbert Ernyei

发明人： Herbert Ernyei

IPC分类号： H03H9/46 ,  H03H9/50 ,  H03H9/24

CPC分类号： H03H9/46 ,  H03H9/50

摘要： An electromechanical band pass filter includes a plurality of cells in cascade. Each cell comprises two parallel cylindrical bars forming longitudinally vibrating resonators and a flexurally vibrating cylindrical coupler connected between the two resonators. The cell of rank i is dimensioned such that one of its relative limiting frequencies is linked with the frequency of a cell for an electrical low-pass filter by the relationship: ##EQU1##

摘要翻译： 机电带通滤波器包括多个级联的单元。 每个单元包括形成纵向振动谐振器的两个平行圆柱形杆和连接在两个谐振器之间的弯曲振动圆柱形耦合器。 等级i的单元的尺寸被设定为使得其相对极限频率之一与用于电气低通滤波器的单元的频率相关联： + TR

公开(公告)号：US4206427A

公开(公告)日：1980-06-03

申请号：US897106

申请日：1978-04-17

申请人： Michel G. Berniere

发明人： Michel G. Berniere

IPC分类号： H03H9/46 ,  H03H9/50 ,  H03H9/02 ,  H03H9/26

CPC分类号： H03H9/50

摘要： An electromechanical filter having two transducers and a mechanical filter vibrating in longitudinal mode, which includes a plurality of resonators connected to each other by coupling rods. The resonators are arranged in two sections and staggered, and the coupling rods connecting two resonators are welded on flat portions provided at the ends of the resonators, each end resonator is connected to the respective transducer through a coupling rod secured to the end face of said resonator adjacent the flat portion, at a point located in the symmetry plane of the resonator, and the coupling rod which connects the end resonator to the next resonator is secured on the flat portion so that the middle of its welded length lies in said symmetry plane.

摘要翻译： 一种具有两个换能器的机电滤波器和在纵向模式下振动的机械滤波器，其包括通过耦合杆彼此连接的多个谐振器。 谐振器分成两部分交错排列，连接两个谐振器的耦合杆被焊接在设置在谐振器端部的平坦部分上，每个端部谐振器通过一个连接杆连接到相应的传感器，耦合杆固定在所述 邻近平坦部分的谐振器在位于谐振器的对称平面中的点处，并且将端部谐振器连接到下一个谐振器的耦合杆被固定在平坦部分上，使得其焊接长度的中间位于所述对称平面 。

公开(公告)号：US4124829A

公开(公告)日：1978-11-07

申请号：US760730

申请日：1977-01-19

申请人： Friedrich Kuenemund

发明人： Friedrich Kuenemund

IPC分类号： H03H9/46 ,  H03H9/50 ,  H04R17/08 ,  H03H9/26 ,  H01L41/04 ,  H03H9/04 ,  H04R17/10

CPC分类号： H03H9/50

摘要： An electromechanical filter comprising a plurality of parallel mounted mechanical resonators which are generally cylindrical in shape with a plurality of input and output resonators operating in a bending mode and at least one intermediate mechanical resonator operating in a torsional mode and being generally dumbbell shaped with two or more cylindrical portions connected by a torsion member and with electrostrictive transducer input and output members connected to the input and output resonators so as to provide filters having wide band characteristics.

摘要翻译： 一种机电滤波器，包括多个平行安装的机械谐振器，其通常为圆柱形，具有以弯曲模式操作的多个输入和输出谐振器和至少一个以扭转模式操作的中间机械谐振器，并且通常具有哑铃形状，具有两个或 更多的圆柱形部分通过扭转构件连接，并且连接到输入和输出谐振器的电致伸缩换能器输入和输出构件，以便提供具有宽带特性的滤波器。

公开(公告)号：US3859546A

公开(公告)日：1975-01-07

申请号：US39775173

申请日：1973-09-17

申请人： NIPPON ELECTRIC CO

发明人： DOI KIKUO ,  FUTAMI TAKEHIRO

IPC分类号： H03H9/17 ,  H03H9/125 ,  H03H9/24 ,  H03H9/50 ,  H01V7/00

CPC分类号： H03H9/50 ,  H03H9/125

摘要： A torsional mode electromechanical transducer comprises a piezoelectric ceramic piece oppositely poled along opposite side surfaces and a pair of electrodes attached to the respective principal surfaces of the ceramic piece. A mechanical resonator having appropriate planar surfaces may be attached to one or both of the electrodes with the ceramic piece. A pair of such piezoelectric ceramic pieces may be fixed together with a common electrode interposed and with the directions of residual polarization of the respective ceramic pieces disposed antiparallel.

摘要翻译： 扭转模式机电换能器包括相对侧面相对地极化的压电陶瓷片和连接到陶瓷片的相应主表面的一对电极。 具有适当平面的机械谐振器可以通过陶瓷片连接到一个或两个电极。 可以将一对这样的压电陶瓷片与公共电极固定在一起，并且各陶瓷片的残余极化方向反平行设置。

公开(公告)号：US3784936A

公开(公告)日：1974-01-08

申请号：US3784936D

申请日：1972-12-29

申请人： INT STANDARD ELECTRIC CORP

发明人： KLEIN D ,  SCHNEIDER G

IPC分类号： H03H9/46 ,  H03H9/50 ,  H03H9/10 ,  H03H9/26

CPC分类号： H03H9/50

摘要： In this electromechanical filter arrangement having a plurality of resonators vibrating in the first flexural mode, with each coupled to the adjacent resonators at the antinodal line, acoustic coupling between resonators not adjacent to one another is prevented by means of partitions or walls between each resonator or between a group of resonators and the adjacent group. The partitions are mounted on the inside of the filter cover or on the filter base plate.

摘要翻译： 在这种具有在第一弯曲模式下振动的多个谐振器的机电滤波器装置中，每个谐振器通过在相邻的谐振器处连接到相邻的谐振器，在彼此不相邻的谐振器之间通过每个谐振器之间的隔板或壁来防止 在一组谐振器和相邻组之间。 分隔件安装在过滤器盖的内部或过滤器基板上。

公开(公告)号：US3745490A

公开(公告)日：1973-07-10

申请号：US3745490D

申请日：1971-09-21

申请人： SIEMENS AG

发明人： TRAUB K

IPC分类号： F15B15/14 ,  H03H3/013 ,  H03H9/05 ,  H03H9/50 ,  H03H7/10 ,  H03H9/00

CPC分类号： H03H9/50 ,  F15B15/14 ,  H03H3/013 ,  Y10T29/49004

摘要： Electromechanical filter consisting of several mechanically coupled, mechanical, flexural resonators which are arranged in a housing. The filter is characterized in that a sound absorbing intermediate layer is inserted between the resonators and at least one wall of the housing.

摘要翻译： 由机械谐振器组成的机械滤波器由先前已经单独修整以设计共振频率的机械滤波器，其通过机械耦合元件连续地相互耦合，在组装之后通过测量完成的滤波器的耦合振荡来确定。 该测量在由其他设备适当地连接到滤波器换能器的计算机的控制下进行。 计算机识别耦合振荡的频率及其与设计值的差异，并计算相应滤波器矩阵的一个或多个元素的设计值的变化。 通过这些值，计算机开发修整装置的设置，用于连续地修整滤波器的元件，例如谐振器或耦合元件，或两者。 在最简化的布置和方法中，仅考虑一个矩阵元素的零点条件的变化，并且将导出的校正应用于对称配置的成对耦合元件中的每一个。

公开(公告)号：US3714475A

公开(公告)日：1973-01-30

申请号：US3714475D

申请日：1970-09-11

申请人： H ENG CORP

发明人： BAKER H

IPC分类号： H02K33/00 ,  H02N11/00 ,  H03H9/05 ,  H03H9/24 ,  H03H9/48 ,  H03H9/50 ,  H01V7/00

CPC分类号： H03H9/0504 ,  H02K33/00 ,  H02N11/006 ,  H03H9/24 ,  H03H9/48 ,  H03H9/50

摘要： There is disclosed a resonator having rigid oscillating parts interconnected by a resilient web for inducing counterrotary movement of the rigid parts. The rigid parts are mounted to rotate about the nodal axis thereof. The nodal axis of each rigid part intersects the center of gravity of the part.

摘要翻译： 公开了一种谐振器，其具有通过弹性腹板互连的刚性振荡部分，用于引起刚性部件的反转运动。 刚性部件安装成围绕其节点轴线旋转。 每个刚性部分的节点轴线与部件的重心相交。

公开(公告)号：US3638145A

公开(公告)日：1972-01-25

申请号：US3638145D

申请日：1969-12-15

申请人： BELL TELEPHONE LABOR INC

发明人： PAPADAKIS EMMANUEL P

IPC分类号： H03H9/05 ,  H03H9/50

CPC分类号： H03H9/0504 ,  H03H9/50

摘要： The specification described an electromechanical filter design which is an improvement over the ladder-type torsional filter of U.S. Pat. No. 3,064,213 issued to W. P. Mason on Nov. 13, 1962. Unwanted longitudinal resonances are eliminated by the use of a longitudinal reinforcing member. An improved mounting arrangement is described. It has also been found that the number of transducers necessary for effective operation of this filter can be reduced by one-half.

摘要翻译： 该说明书描述了一种机电滤波器设计，该设计是对美国专利的梯形扭转滤波器的改进。 1962年11月13日授予W.P.Mason的第3,064,213号。通过使用纵向加强件消除了不需要的纵向共振。 描述了改进的安装布置。 还已经发现，该滤波器的有效操作所需的换能器的数量可以减少一半。