Four-stage circuit architecture for detecting pulsed signals
US10056868B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2015 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Mar 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrical circuit includes a sensor configured to generate a current signal comprising a first portion comprising a contribution from a target source and/or a second portion comprising a contribution from sources other than the target source, a trans-impedance amplifier that amplifies the current signal and generate a low noise signal, and a high pass filter that converts the low noise signal into an AC signal having a positive amplitude, a negative amplitude, and a zero cross-over point between the positive and negative amplitudes. The circuit also includes a positive integrating amplifier that receives the positive amplitude of the AC signal and generates a positive integrated value over an integration period, and a negative integrating amplifier that receives the negative amplitude of the AC signal and generates a negative integrated value over the integration period. The circuit further includes at least one analog-to-digital converter that receives the integrated values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.