公开(公告)号：US4472692A

公开(公告)日：1984-09-18

申请号：US426908

申请日：1982-09-29

Applicant: Pierre Hartemann ,  Jean P. Castera ,  Jean M. Dupont

Inventor： Pierre Hartemann ,  Jean P. Castera ,  Jean M. Dupont

IPC: H01P1/215 ,  H01P7/00 ,  H03H2/00 ,  H03H9/00 ,  H03H9/24

CPC classification number: H03H2/001

Abstract: Tunable selective devices utilizing forward magnetostatic bulk waves. A filter is able to act as an oscillator loop or as a passive transmission system in which two resonant cavities including gratings are so arranged that via a selective reflector grating they may exchange magnetostatic bulk waves energized and intercepted by transducers of the microstrip type. The invention relates in particular to the filtering of very high frequency electric signals, and to the production of tunable oscillators and to measuring magnetic fields.

Abstract translation: 利用正向静磁体波的可调谐选择装置。 滤波器能够用作振荡器环路或作为无源传输系统，其中包括光栅的两个谐振腔被布置成通过选择性反射器光栅，它们可以交换由微带型的换能器激励和截取的静磁体波。 本发明特别涉及非常高频电信号的滤波，以及可调谐振荡器的产生以及测量磁场。

公开(公告)号：US4314214A

公开(公告)日：1982-02-02

申请号：US166698

申请日：1980-07-03

Applicant: Jean P. Castera ,  Pierre Hartemann ,  Jean M. Dupont

Inventor： Jean P. Castera ,  Pierre Hartemann ,  Jean M. Dupont

IPC: H03H9/25 ,  H01P3/00 ,  H03H2/00 ,  H03H3/08

CPC classification number: H03H2/001

Abstract: The invention relates to a magnetostatic-wave device whose ferrimagnetic layer supports an exchange structure formed by an array of conducting strips having their ends connected by conducting bridges. The invention applies particularly to the construction of magnetostatic-wave devices using couplers, hybrid junctions, reflecting mirrors, extraction structures and resonators.

Abstract translation: 本发明涉及一种静磁波器件，其磁化铁层支持由导电条阵列形成的交换结构，导电条的端部通过导电桥连接。 本发明特别适用于使用耦合器，混合结，反射镜，提取结构和谐振器的静磁波器件的结构。

公开(公告)号：US4949198A

公开(公告)日：1990-08-14

申请号：US257133

申请日：1988-10-11

Applicant: Ernst Huijer ,  Jean C. Lehureau ,  Jean P. Castera

Inventor： Ernst Huijer ,  Jean C. Lehureau ,  Jean P. Castera

IPC: G11B11/10 ,  G11B5/02 ,  G11B5/127 ,  G11B5/245 ,  G11B5/49 ,  G11B11/105

CPC classification number: G11B5/127 ,  G11B5/1278 ,  G11B5/245 ,  G11B5/4907 ,  G11B5/4946 ,  G11B5/4969

Abstract: Thermomagnetic recording head for use in magnetic tape recording, comprising a layer of a ferromagnetic material set in the vicinity of a magnetic recording medium. A heating means is used to heat the layer of ferromagnetic material locally to a temperature that reaches the Curie point of the ferromagnetic material. Each heated zone is thus demagnetized and constitutes a recording gap for the recording medium.

Abstract translation: 用于磁带记录的热磁记录头，包括设置在磁记录介质附近的铁磁材料层。 加热装置用于将铁磁材料层局部加热至达到铁磁材料的居里点的温度。 因此，每个加热区域被消磁，并构成记录介质的记录间隙。

公开(公告)号：US4566329A

公开(公告)日：1986-01-28

申请号：US692546

申请日：1985-01-18

Applicant: Jean P. Castera ,  Paul L. Meunier

Inventor： Jean P. Castera ,  Paul L. Meunier

IPC: G01L1/00 ,  G01L1/10 ,  G01L1/16 ,  G01L5/16 ,  G01P15/097 ,  G01P15/08 ,  G01N29/00

CPC classification number: G01L5/16 ,  G01L1/165 ,  G01P15/0975

Abstract: The vectorial force sensor with elastic surface waves according to the invention comprises a mechanical part, for example a lamella, subjected to a stress (.sigma.). One face of the lamella incorporates transducers maintaining an elastic surface wave. The system according to the invention possesses three magnetic means inducing in the lamella three orthogonal magnetic fields, one of which is parallel to the direction of polarization of the elastic surface wave. Means are provided to make it possible to measure the influence of each magnetic field on the speed of propagation of the elastic surface wave. Such a system can be used particularly in accelerometers.

Abstract translation: 根据本发明的具有弹性表面波的矢量力传感器包括经受应力（σ）的机械部件，例如薄片。 薄片的一面包含保持弹性表面波的换能器。 根据本发明的系统具有在薄片三个正交磁场中诱导的三个磁性装置，其中一个平行于弹性表面波的极化方向。 提供了使得可以测量每个磁场对弹性表面波的传播速度的影响的装置。 这种系统可以特别用在加速度计中。

公开(公告)号：US4364013A

公开(公告)日：1982-12-14

申请号：US149317

申请日：1980-05-13

Applicant: Jean P. Castera ,  Jean M. Dupont

Inventor： Jean P. Castera ,  Jean M. Dupont

IPC: G01R33/02 ,  G01R33/00 ,  G01B7/14 ,  G01N27/72

CPC classification number: G01R33/02

Abstract: A magnetic transducer is disclosed which utilizes the magnetostrictive effect for creating an easy axis of magnetization in the longitudinal axis of a magnetic wire having a high cobalt content by bending the wire, which is then placed in a non-magnetic hollow tube. This tube is placed in the axis of a detection coil. The application of a magnetic field, alternately in one direction and the other in the longitudinal axis of the assembly creates a flux variation due to the magnetization change in the easy axis. The pulses detected have a high amplitude and a low rise time.

Abstract translation: 公开了一种磁传感器，其利用磁致伸缩效应，通过弯曲电线来产生具有高钴含量的磁线的易磁化轴，然后将其放置在非磁性中空管中。 该管被放置在检测线圈的轴线上。 在组件的纵向轴线上交替地在一个方向和另一个方向施加磁场由于易轴的磁化变化而产生磁通量变化。 所检测的脉冲具有高振幅和低上升时间。

公开(公告)号：US4341998A

公开(公告)日：1982-07-27

申请号：US124076

申请日：1980-02-25

Applicant: Jean P. Castera ,  Pierre Hartemann

Inventor： Jean P. Castera ,  Pierre Hartemann

IPC: G01R33/02 ,  H03H2/00 ,  H03B21/00

CPC classification number: H03H2/001 ,  G01R33/02

Abstract: A unidirectional magnetometer comprising at least two magnetostatic wave oscillators with resonators or delay lines, made in two portions in a magnetic material layer respectively subject to the field to be measured and to given magnetic fields of the same direction, but of opposite sense and adjacent intensities.

Abstract translation: 一种单向磁强计，包括至少两个具有谐振器或延迟线的静磁波振荡器，分别在磁性材料层中分别经受待测场和给定相同方向但具有相反方向和相邻强度的磁场 。

公开(公告)号：US4291283A

公开(公告)日：1981-09-22

申请号：US34183

申请日：1979-04-27

Applicant: Jean P. Castera

Inventor： Jean P. Castera

IPC: H03B5/00 ,  H03B1/00 ,  H03B1/04 ,  H03B5/18 ,  H03B5/30

CPC classification number: H03B5/1882 ,  H03B2201/0241 ,  H03B2202/017 ,  H03B2202/05

Abstract: An oscillator including two magnetostatic wave delay lines of different lengths formed on the surface of a magnetic material, one of whose ends is common and made by a first microstrip coupler, each of the other ends being made of a second and a third microstrip couplers respectively. The two lines are looped by means of a single amplifier. By selecting the two lengths, it is possible to obtain the desired interval between modes in such a way that there is a single oscillation mode comprised in the pass-band of the strips, in a pre-determined tuning band. This oscillator operates in the microwave range.

Abstract translation: 一种振荡器，包括两个不同长度的静磁波延迟线，形成在磁性材料的表面上，其一端是共同的，由第一微带耦合器制成，其另一端分别由第二和第三微带耦合器 。 两条线路通过单个放大器进行环路。 通过选择两个长度，可以以预定的调谐带中的条带的通带中包含单个振荡模式的方式获得模式之间的期望间隔。 该振荡器在微波范围内工作。