Band pass filter from two notch filters
US6268766A · kind A · utility
5Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H19/004
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A band pass filter includes a pair of notch filters having different notch frequencies and a difference amplifier coupled to the outputs of the notch filters. The notch filters preferably have response curves that intersect at -3 dB. The separation of the notch frequencies determines, in part, the ripple in the response curve of the band pass filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.