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A prototype CdTe pixel detector system with 19 pixels arranged in a 200um pitch hexagonal format is being developed for energy resolved medical X-ray imaging applications; this device should be capable of detecting input photon rates of up to 2*108 counts per mm2 and energy resolution of approximately 5% at 122keV. This paper presents a description of this system along with the initial spectral and...
An integrated and comprehensive model of a hybrid pixel detector has been developed by using Matlab and Simulink. Prior to this streamlined model, various team members (physicists, electronics and software engineers) used different software tools to separately simulate individual entities of the system. As a consequence, it was difficult to exchange and integrate the results, as well as to interpret...
The most common form of read-out electronics for radiation detection at the pixel basis can be described as a signal processing channel consisting off: detector pixel, preamplifier, pulse shaper and A/D converter. The signal generation starts when a photon interacts with a detector, resulting in a charge which amount is proportional to the photon energy. The charge is further processed by either a...
The distinctive challenges for design of read-out ASICs for radiation detectors in biomedical applications originate from the need to be interfaced to detectors with high density of pixels and process photons with high rates. Those two dominant factors impose a range of conflicting restrictions and demands on the design of the readout integrated circuits (ROIC). Some of the key challenges are: limited...
The fabricated analog application specific integrated circuit (ASIC) is a front-end circuit for multichannel pixel detector system. The designed ASIC provides signal amplification for a pixelated arrays of 1 mm and 200 ??m pitch pixel detectors made from cadmium telluride (CdTe) and cadmium zinc telluride (CZT) detector. Both the detector and ASIC are combined to target future high intensity research...
In this paper, the student-centered pedagogical program used in the School of Electrical Engineering with a case study illustrating and describing the project-based curriculum in microelectronics is described. A case study project also described in the paper shows that the project-based learning method engages students in a deeper learning where not only emphasis is given to the final product, but...
Due to high functionality integration in electronic devices and the ever increasing requirements for low power devices, there is an urgent need for novel low power approaches. The advancement in technology scaling has made it feasible to incorporate the extra functionality, however by increasing devices sensitivity to variations, the overall device yield decreases. Process and temperature variations...
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