Surface acoustic wave filter having diminished bandwidth and method of operating the same
US6593678B1 · kind B1 · utility
13Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2000 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Oct 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6483
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An element of a SAW filter network, a method of filtering a signal and a SAW filter network incorporating the element or the method. In one embodiment, the element includes: (1) a SAW resonator having a nominal usable bandwidth and (2) an extrinsic capacitor coupled in parallel with the SAW resonator, the extrinsic capacitor interacting with the SAW resonator to cause an anti-resonance frequency of the element to move toward a resonance frequency thereof and thereby decrease an overall operating bandwidth of the element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.