Automatic pole-zero adjustment circuit for an ionizing radiation spectroscopy system and method
US6295508A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Sep 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/04
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An automatic pole-zero (APZ) adjustment circuit for an ionizing radiation spectroscopy system. An amplitude histogram of an acquired spectrum is obtained. The shape of a selected peak from the amplitude histogram is analyzed for peak shape distortion indicating the existence of undershoot or overshoot. An analog correction signal generated by a pole-zero adjustment network is added to cancel existing undershoot or overshoot, thereby minimizing distortion of the peak shape. In an alternate embodiment, the correction signal is a digital transformation algorithm applied to a programmable digital shaping filter, thereby digitally minimizing distortion of the peak shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.