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1. 发明授权

US3753165A Tunable variable bandwidth magneto-elastic filter and method 失效
标题翻译：可变带宽磁性滤波器及方法
公开(公告)号：US3753165A
公开(公告)日：1973-08-14
申请号：US3753165D
申请日：1971-12-27
申请人： CHU ASSOCIATES
发明人： MORGENTHALER F
IPC分类号： H01P1/215 , H01P1/218 , H03H9/30 , H03H9/42 , H03H9/46 , H03H9/34 , H03H7/08
CPC分类号： H03H9/426 , H01P1/218 , H03H9/46
摘要： This disclosure involves one or a plurality of cascaded YIG or similar magneto-elastic media propagating elastic waves transduced from a band of electromagnetic waves and having special magnetic field curved profiles and variable bias magnetic fields applied thereto such as to couple out or absorb the energy of specified variable frequencies to-be-filtered, by effecting conversions of the elastic waves of such specified frequencies only to spin waves. Cascaded units enable a bandpass characteristic to be produced that may be varied in width and center frequency.
摘要翻译：本公开涉及一个或多个级联的YIG或类似的磁弹介质传播从电磁波带传播的弹性波，并且具有特殊的磁场弯曲轮廓和施加到其上的可变偏置磁场，以便耦合或吸收通过仅将这些指定频率的弹性波转换为旋转波来指定要被滤波的可变频率。级联单元能够产生可能在宽度和中心频率上变化的带通特性。

2. 发明授权

US4177438A Surface acoustic wave modulator using single crystal films of lithium ferrite 失效
标题翻译：使用锂铁氧体单晶膜的表面声波调制器
公开(公告)号：US4177438A
公开(公告)日：1979-12-04
申请号：US925726
申请日：1978-07-18
申请人： Carmine Vittoria
发明人： Carmine Vittoria
IPC分类号： H03H9/42 , H03H9/26 , H01L41/12 , H03C3/38 , H03H9/30
CPC分类号： H03H9/423 , H03H9/426
摘要： A surface acoustic wave (SAW) device formed by an unitary insulating, magostrictive ferrite, slab whose easy axis of magnetization is initially (prior to the application of a d.c. magnetic biasing field) perpendicular to the direction of SAW-wave propagation. For example, the easy axis of magnetization in a single-crystal lithium ferrite slab is the axis. Therfore this axis is aligned perpendicular to the SAW wave propagation direction and parallel to the edges of the SAW device. Application of a dc magnetic field swings the magnetic moments such that they will be parallel with the SAW wave propagation. Materials useful in carrying out this invention are those which have (1) an easy axis of magnetization, (2) good insulator qualities and (3) the magnetostrictive property. A dc magnetic field is applied parallel with the SAW direction or perpendicular to the easy axis of the material in order to align the magnetic moments in the direction of the SAW wave propagation. Such alignment of the magnetic moments of the material causes a delay in propagation time of the SAW wave.
摘要翻译：通过垂直于SAW波传播方向的初始（在施加直流磁偏置场之前）易磁化轴线的整体绝缘磁致伸缩铁氧体平板形成的表面声波（SAW）器件。例如，单晶锂铁氧体板的易磁化轴是<111>轴。因此，该轴垂直于SAW波传播方向并且平行于SAW器件的边缘排列。直流磁场的应用使磁矩摆动，使其与SAW波传播平行。可用于实施本发明的材料是具有（1）易磁化轴，（2）良好的绝缘体品质和（3）磁致伸缩性能的材料。直流磁场与SAW方向平行或垂直于材料的容易轴线施加，以便在SAW波传播方向上对准磁矩。材料的磁矩的这种排列导致SAW波的传播时间的延迟。

3. 发明授权

US2434255A Temperature compensated wave 失效
公开(公告)号：US2434255A
公开(公告)日：1948-01-13
申请号：US2434255D
CPC分类号： H03H9/36 , H03H9/426 , Y10S367/902

4. 发明授权

US5260615A Magnetoelastic wave device 失效
标题翻译：磁弹波装置
公开(公告)号：US5260615A
公开(公告)日：1993-11-09
申请号：US723305
申请日：1991-06-28
申请人： Masashi Sahashi , Tadahiko Kobayashi , Tetsuhiko Mizoguchi
发明人： Masashi Sahashi , Tadahiko Kobayashi , Tetsuhiko Mizoguchi
IPC分类号： H03H9/25 , H03H9/22 , H03H9/38 , H03H9/42 , H01L41/08
CPC分类号： H03H9/426
摘要： A magnetoelastic wave device comprising a substrate, a magnetostrictive film formed over the substrate, a wave generating section, a wave receiving section, and a modulation magnetic field generating section. The magnetostrictive film has an axis of easy magnetization which is substantially axis and extends parallel to the major surfaces of the magnetostrictive film.
摘要翻译：一种磁弹性波装置，包括基板，形成在基板上的磁致伸缩膜，波发生部，波接收部和调制磁场产生部。磁致伸缩薄膜具有易磁化的轴线，该轴线基本上是轴线，并平行于磁致伸缩薄膜的主表面延伸。

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