公开(公告)号：US3919669A

公开(公告)日：1975-11-11

申请号：US46170974

申请日：1974-04-17

Applicant: THOMSON CSF

Inventor： HARTEMANN PIERRE

IPC: G02B6/12 ,  G02F1/335 ,  H03H3/08 ,  H03H9/02 ,  H03H9/145 ,  H03H9/25 ,  H03H9/42 ,  H03H9/44 ,  H03H9/64 ,  H03H9/72 ,  H03H9/76 ,  H03H9/26 ,  G02F1/11 ,  G02F1/33 ,  H03H9/34

CPC classification number: H03H9/6496 ,  G02F1/335 ,  H03H9/02968 ,  H03H9/14547 ,  H03H9/14561 ,  H03H9/44 ,  H03H9/76

Abstract: The present invention relates to surface wave electromechanical transducers. In accordance with the invention, there is provided a surface wave transducer array wherein the radiator elements comprise electrodes of interdigitated comb type whose teeth are curved to follow arcs whose circumferences are disposed in concentric pairs. This transducer array is applicable in particular to the emission of surface-elastic waves, to acoustooptical deflector systems and to frequency-selective transmission systems.

Abstract translation: 本发明涉及表面波机电换能器。 根据本发明，提供了一种表面波换能器阵列，其中散热器元件包括交叉梳状的电极，其齿是弯曲的，以跟随其周围以同心对配置的弧。 该换能器阵列特别适用于发射表面弹性波，声光偏转器系统和频率选择性传输系统。

公开(公告)号：US3878407A

公开(公告)日：1975-04-15

申请号：US42579273

申请日：1973-12-18

Applicant: THOMSON CSF

Inventor： HARTEMANN PIERRE ,  GENAUZEAU FRANCEL

IPC: H03H9/25 ,  H03H3/08 ,  H03H9/02 ,  H03H9/145 ,  H01V7/00

CPC classification number: H03H9/0296 ,  H03H9/02543 ,  H03H9/14508

Abstract: The present invention relates to elastic surface wave electromechanical filters utilising interdigitated transducers. The electromechanical filter in accordance with the invention is made of a piezoelectric substrate carrying on each of its opposite main faces a pair of side-by-side comb type transducers for forming two collateral transmission channels coupled to a balanced-unbalanced electrical transmission device.

Abstract translation: 本发明涉及利用交叉换能器的弹性表面波机电滤波器。 根据本发明的机电滤波器由压电基板制成，压电基板在其相对的主表面中的每一个上承载一对并排梳状换能器，用于形成耦合到平衡不平衡电力传输装置的两个侧向传输通道。

公开(公告)号：US3663899A

公开(公告)日：1972-05-16

申请号：US3663899D

申请日：1970-04-02

Applicant: THOMSON CSF

Inventor： DIEULESAINT EUGENE ,  HARTEMANN PIERRE

IPC: H03H9/145 ,  H03H9/64 ,  H03H9/02 ,  H03H9/32

CPC classification number: H03H9/1452 ,  H03H9/14526 ,  H03H9/6423

Abstract: An electro-acoustic surface-wave (Rayleigh waves) device comprises a piezoelectric plate equipped with two transducers one at least of which is constituted by two comb-shaped electrodes having interleaved teeth. At least one of the electrodes have teeth of a dissimilar length the envelope of which is the curve representing the Fourier transform of the transfer function of the device when operated as a filter. The device finds application in the fields of radar, telecommunications, data processing, and the like.

Abstract translation: 电声表面波（瑞利波）装置包括配备有两个换能器的压电板，至少一个振动器由两个具有交错齿的梳状电极构成。 电极中的至少一个具有不同长度的齿，其包络是表示作为过滤器操作时装置的传递函数的傅里叶变换的曲线。 该装置在雷达，电信，数据处理等领域中得到应用。

公开(公告)号：US3633132A

公开(公告)日：1972-01-04

申请号：US3633132D

申请日：1970-03-05

Applicant: THOMSON CSF

Inventor： HARTEMANN PIERRE

IPC: H03H9/44 ,  H03H7/30 ,  H03H9/00

CPC classification number: H03H9/44

Abstract: To provide an energy-weighted signal in which the amplitude of the secondary lobes in the signal are essentially suppressed, comb-shaped electrodes having interleaved teeth applied to a piezoelectric wafer equipped with two transducers are dimensioned that at least one of the electrodes has teeth of dissimilar length thus inherently producing weighting of the compressed signal. The tips of the comb-shaped electrodes are arranged in accordance with desired mathematical weighting functions, e.g. a Gauss curve, the Taylor approximation of a Dolph-Tchebychev function, or the Hamming function.

Abstract translation: 为了提供能量加权信号，其中基本上抑制了信号中次级叶片的振幅，具有插入到具有两个换能器的压电晶片的插入齿的梳状电极的尺寸被确定为至少一个电极具有 因此不同长度因此固有地产生压缩信号的加权。 梳状电极的尖端根据期望的数学加权函数排列，例如， 高斯曲线，Dolph-Tchebychev函数的泰勒近似，或汉明函数。