NDLI: Automatic pole-zero/zero-pole digital compensator for high-resolution spectroscopy: design and experiments

Content Provider	IEEE Xplore Digital Library
Author	Geraci, A. Pullia, A. Ripamonti, G.
Copyright Year	1999
Description	Author affiliation: Dipt. di Elettronica e Inf., Politecnico di Milano, Italy (Geraci, A.)
Abstract	In a high-resolution spectroscopy system the relatively long exponential decay due to the charge preamplifier is customarily canceled in an analogue fashion by means of a PZ (pole-zero) stage. The accurateness of such a compensation has a big impact on the energy resolution because it strongly affects the baseline-stability problems. Automatic methods operating in the analogue domain are used but they require mechanical adjustment of trimmers, which is bulky and not adequate in experiments with many measurement channels. We have automatically and on-line performed such a compensation in a digital way, while maintaining a spectroscopy performance and keeping at minimum both the ADC sampling frequency (thus power consumption) and its resolution (thus cost). This is done through an IIR filter, implemented within a FPGA by a DSP. The so-compensated waveform has, in excellent approximation, an all-pole shape. Starting from such a signal, the minimum-noise filters for energy and/or time measurements are then promptly synthesized and implemented for real time operation through the same DSP.
Starting Page	891
Ending Page	895
File Size	379712
Page Count	5
File Format	PDF
ISBN	0780350219
ISSN	10823654
DOI	10.1109/NSSMIC.1998.774313
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-11-08
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectroscopy Energy resolution IIR filters Digital signal processing Preamplifiers Mechanical variables measurement Sampling methods Frequency Energy consumption Signal resolution
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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