Ladder-type piezoelectric filter
US4323865A · kind A · utility
19Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1980 |
| Grant date | Apr 6, 1982 |
| Priority date | — |
| Expiry date | Jan 3, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/1028
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
There are provided ladder-type piezoelectric filters, wherein each piezoelectric resonator incorporated is arranged to have opposing faces of rectangular dimensions with the ratio of a short side length to a long side length being less than a value of 0.7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.