Circuit element utilizing magnetostatic wave
US5189383A · kind A · utility
3Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Sep 4, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2/001
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit element utilizing a magnetostatic wave is disclosed which uses a magnetostatic-wave resonator having a structure that a thin YIG (yttrium iron garnet) film is formed on a non-magnetic substrate such as a GGG (gadolinium gallium garnet) substrate. In this resonator, at least a part of end faces of the ferrimagnetic film are made rough such as by lapping with abrasives having a grain size greater than or equal to about 15 .mu.m, to suppress the generation of a unnecessary spurious mode in a wide frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.