MODELING SOLID-STATE LINEAR-X-RAY SENSORS USING A MIXED-SIGNAL HARDWARE DESCRIPTION LANGUAGE

Solid-state linear X-ray sensors are used to produce high-quality X-ra y digital images. A better understanding of effects observed in the di fferent parts of this detector (scintillator, photodiodes, CCD shift r egisters, signal equalization function including ADC) can be reached b y a more comprehensive understanding of how signals are generated in t he devices. Behavioural models suitable for computer-aided analysis of each part of X-ray sensors are developed. The models, written in HDL- A (hardware description language dedicated to behavioural description of analog and mixed-signal systems), can be associated with circuit-le vel models already available for electronic components to provide a ti me domain simulation of an entire X-ray computed imaging system in a m ixed-signal simulation environment. (C) 1998 Elsevier Science S.A. All rights reserved.