Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances
US6114926A · kind A · utility
2Cited by
13References
2Claims
0Family size
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Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6489
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A piezoelectric substrate having two reflectors along a propagation path of a surface acoustic wave and three interdigital electrodes provided on said piezoelectric substrate consecutively between the reflectors. A primary side electrode is connected to an input/output terminal and a secondary side electrode is connected to a second input/output terminal. Each interdigital electrode includes include pairs of electrode fingers, where the pair of electrodes for one interdigital electrode is different than a pair of electrodes for another interdigital electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.