公开(公告)号：US4944857A

公开(公告)日：1990-07-31

申请号：US401710

申请日：1989-09-01

申请人： John D. Adam

发明人： John D. Adam

IPC分类号： H01P1/215 ,  H01P1/23

CPC分类号： H01P1/215 ,  H01P1/23

摘要： A plurality of frequency selective limiting (FSL) units are concurrently prepared on a common substrate by depositing a first ferrite member onto a metallized surface of the substrate. The first ferrite member is formed by sputtering a first ferrite film onto the metallized surface and subsequently growing a ferrite layer thereon. A plurality of signal carrying conductors are positioned in spaced relation on the first ferrite member. A second ferrite member is deposited on top in the same manner as the first ferrite member. The overall structure is diced into individual units that are then metallized thereby providing a plurality of FLS's.

摘要翻译： 通过在衬底的金属化表面上沉积第一铁氧体元件，在共同的衬底上同时制备多个频率选择性限制（FSL）单元。 第一铁氧体部件通过将第一铁氧体膜溅射到金属化表面上并随后在其上生长铁氧体层而形成。 多个信号承载导体在第一铁氧体元件上以间隔的关系定位。 第二铁氧体元件以与第一铁氧体元件相同的方式沉积在顶部。 将整体结构切成单独的单元，然后进行金属化，从而提供多个FLS。

公开(公告)号：US4785269A

公开(公告)日：1988-11-15

申请号：US863481

申请日：1986-05-15

申请人： John D. Adam ,  Bruce R. McAvoy

发明人： John D. Adam ,  Bruce R. McAvoy

IPC分类号： H03H9/00 ,  H03H9/22

CPC分类号： H03H9/22

摘要： Electroacoustic resonating apparatus capable of generating resonances of tunable frequencies. The apparatus includes two transducers coupled to a ferrimagnetic substrate at opposite ends thereof. The first transducer converts an input signal into a signal that produces bulk acoustic waves in the ferrimagnetic substrate. The second transducer receives the bulk acoustic waves and converts them into electrical signals, or alternatively a single transducer which performs both input and output functions. Variable magnetizing means located proximate to the ferromagnetic substrate induces a magnetic field throughout the substrate wherein the magnetic field alters the frequencies of the resonance of the acoustic waves. By varying the magnitude of the magnetic field, the frequencies of the resonances may be varied, thereby allowing tuning of the apparatus.

摘要翻译： 能产生可调谐频率谐振的电声谐振装置。 该装置包括在其相对端耦合到铁氧体基板的两个换能器。 第一传感器将输入信号转换成在铁磁性衬底中产生体声波的信号。 第二传感器接收体声波并将其转换为电信号，或者替代地执行输入和输出功能的单个换能器。 位于铁磁性衬底附近的可变磁化装置在整个衬底上引起磁场，其中磁场改变了声波的共振频率。 通过改变磁场的大小，可以改变谐振的频率，从而允许对装置进行调谐。