Magnitude and group delay shaping circuit in continuous-time read channel filters
US6184748A · kind A · utility
16Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1999 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Sep 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45472
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A low power, high performance circuit for magnitude and group delay shaping in continuous-time read channel filters is disclosed. The circuit generally comprises a first and a second biquadratic circuit, each having an input, a band pass, and a output low pass node, where the second biquadratic input node is coupled to the first biquadratic output node, and a first and second transconductor coupled to the first biquadratic band pass node and also to the second biquadratic band pass and low pass output nodes, respectively. The first and second transconductors are preferably programmable transconductors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.