Active-RC filter with compensation to reduce Q enhancement
US7075364B2 · kind B2 · utility
21Cited by
4References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2004 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Aug 17, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/1234
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An active filter with compensation to reduce Q-enhancement is disclosed. The filter may include a first amplifier and a second amplifier coupled to the first amplifier. The second amplifier having a negative feedback loop including a buffer having a plurality of compensation resistors. The compensation resistors may each have a value that results in the biquad filter having substantially zero Q-enhancement. The biquads may cascaded to form higher order filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.