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Title: High-accuracy fit of the poles of spectroscopy amplifiers designed for mixed analog-digital filtering

Abstract

In this paper, a method for the identification of the poles` and zeros` position of an analog amplifier for nuclear spectroscopy used as a prefilter for a subsequent digital filter setup is presented. The proposed technique is based upon a subspace-based system state-space identification (4SID) method, which is well suited to a data set constituted by a noisy measurement of the sampled impulse response of the circuit. The algorithm runs unassisted and does not require skills by the operator. The experiments confirm that by using the so-obtained pole values, the shape of the impulse response of the amplifier can be fit with much better than 1% accuracy. Consequently, the overall filtering (analog + digital) can have finite duration and a top with a flatness much better than 1%.

Authors:
; ; ;  [1]
  1. Politecnico di Milano (Italy). Dipt. of Elettronica e Informazione
Publication Date:
OSTI Identifier:
477311
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Nuclear Science
Additional Journal Information:
Journal Volume: 44; Journal Issue: 2; Other Information: PBD: Apr 1997
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; SPECTROMETERS; AMPLIFIERS; ANALOG SYSTEMS; DIGITAL FILTERS; ALGORITHMS; ANALOG-TO-DIGITAL CONVERTERS

Citation Formats

Bittanti, S, Gatti, E, Ripamonti, G, and Savaresi, S M. High-accuracy fit of the poles of spectroscopy amplifiers designed for mixed analog-digital filtering. United States: N. p., 1997. Web. doi:10.1109/23.568793.
Bittanti, S, Gatti, E, Ripamonti, G, & Savaresi, S M. High-accuracy fit of the poles of spectroscopy amplifiers designed for mixed analog-digital filtering. United States. https://doi.org/10.1109/23.568793
Bittanti, S, Gatti, E, Ripamonti, G, and Savaresi, S M. 1997. "High-accuracy fit of the poles of spectroscopy amplifiers designed for mixed analog-digital filtering". United States. https://doi.org/10.1109/23.568793.
@article{osti_477311,
title = {High-accuracy fit of the poles of spectroscopy amplifiers designed for mixed analog-digital filtering},
author = {Bittanti, S and Gatti, E and Ripamonti, G and Savaresi, S M},
abstractNote = {In this paper, a method for the identification of the poles` and zeros` position of an analog amplifier for nuclear spectroscopy used as a prefilter for a subsequent digital filter setup is presented. The proposed technique is based upon a subspace-based system state-space identification (4SID) method, which is well suited to a data set constituted by a noisy measurement of the sampled impulse response of the circuit. The algorithm runs unassisted and does not require skills by the operator. The experiments confirm that by using the so-obtained pole values, the shape of the impulse response of the amplifier can be fit with much better than 1% accuracy. Consequently, the overall filtering (analog + digital) can have finite duration and a top with a flatness much better than 1%.},
doi = {10.1109/23.568793},
url = {https://www.osti.gov/biblio/477311}, journal = {IEEE Transactions on Nuclear Science},
number = 2,
volume = 44,
place = {United States},
year = {Tue Apr 01 00:00:00 EST 1997},
month = {Tue Apr 01 00:00:00 EST 1997}
}