Baseline restore sampling method
US9509294B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 2015 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Apr 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/007
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A baseline restore circuit includes a current input for receiving a current pulse having a DC current baseline; a charge amplifier having an input coupled to the current input, and an output referenced to a DC voltage baseline; a feedback baseline restore circuit comprised of a switched capacitor integration circuit having an input coupled to the output of the charge amplifier, and an output coupled to the current input; and a sample control circuit controlling the switched capacitor circuit input to the integrator so that only the reference voltage baseline is sampled. The inputs to the sample control circuit are a window comparator, and a high rate pulse detector, both with inputs from the charge amplifier output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.