Pole/zero compensation in cascode amplifiers
US5406220A · kind A · utility
9Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1993 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Nov 1, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45264
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Compensation for a second pole located at an internal node (107 and 108) of a two pole cascode differential amplifier (30) is accomplished by introducing a left half plane zero in the transfer function of the cascode differential amplifier (30). This is done by coupling a compensation capacitor (46, 47) between an output node (105, 106) and the internal node (107, 108) of the cascode differential amplifier (30). The compensation capacitors (46, 47) improve high frequency performance of the amplifier (30) by improving phase margin and increasing stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.