On the implementation of multiple delay line filters with digital signal processing techniques

Conference · Mon Aug 01 00:00:00 EDT 1994 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6884479

Ripamonti, G; Castoldi, A ^[1]; Gatti, E ^[2]

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1. Univ. degli Studi di Milano (Italy). Dipt. di Fisica
2. Politecnico di Milano (Italy). Dipt. di Elettronica e Informazione CEQSE-CNR, Milano (Italy)

By using an analog prefilter and a sampled data processor, it is possible to easily implement an entire class of weighting functions. Their main feature is a finite time duration; an additional interesting property is the small number of samples needed to process a pulse. Flat tops within better than 1% accuracy can also be achieved. Possible implementations of these filters are discussed with emphasis on caused of inaccuracy. In particular, these filters come out to be time-variant. Synchronization issues are therefore developed and thoroughly discussed. In a mixed analog-digital implementation, special regard should be given to the A/D converter: the requirements on its characteristics are derived. In particular, a simple way to evaluate its resolution (number of bits) is derived, and the interrelationships between the achievable accuracy, ballistic deficit reduction, and the characteristics of the analog prefilter are discussed. Strategies aimed at achieving and/or at avoiding the synchronization of the input pulses with the digital acquisition are proposed.

• OSTI ID: 6884479
• Report Number(s): CONF-931051-; CODEN: IETNAE; TRN: 94-023017
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Vol. 41:4Pt1; Conference: NSS-MIC '93: nuclear science symposium and medical imaging conference, San Francisco, CA (United States), 30 Oct - 6 Nov 1993; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
42 ENGINEERING
DELAY CIRCUITS
IMPLEMENTATION
ANALOG SYSTEMS
ANALOG-TO-DIGITAL CONVERTERS
DATA ACQUISITION
DIGITAL FILTERS
PULSE CIRCUITS
PULSE SHAPERS
RADIATION DETECTORS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
MEASURING INSTRUMENTS
SIGNAL CONDITIONERS
440100* - Radiation Instrumentation
426000 - Engineering- Components
Electron Devices & Circuits- (1990-)