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This paper presents the architecture, simulation and measurement results of a low power dual stage charge sensitive amplifier providing a time-over-threshold analog to digital conversion with linear transfer characteristic dedicated for readout of long silicon strip detectors. The key features of the presented solution are: very low power consumption (2 mW), linear transfer characteristic and low...
A new multi-modality imaging tool is under development in the framework of the INSERT (INtegrated SPECT/MRI for Enhanced Stratification in Radio-chemoTherapy) project, supported by the European Community. A custom SPECT apparatus, used as an insert for commercially available MRI systems, will enhance the treatment of brain tumors (primarily glioma) by offering more effective and earlier diagnosis...
High energy physics experiments in the intensity frontier push at the limit the detector resolutions. This is the also case for the upgrade of the MEG experiment that requires a design of a new drift chamber to track 52.8 MeV positrons with a single hit resolution of about 100 µm. In order to to compare the tracking performances of various prototypes implementing different cell configurations, a high...
The measurement of atmospheric radioxenon is an important tool for monitoring nuclear weapons testing. The development of new and improved xenon detection methods supports the monitoring program of the Comprehensive Test Ban Treaty Organization (CTBTO). In the current work we have developed a 24-element Si PIN diode detector to measure both the characteristic X-rays and the high energy mono-energetic...
The features of the 180nm TowerJazz1 CMOS technology allow for the first time the use of CMOS Monolithic Active Pixel Sensors (MAPS) under the harsh operational conditions of the LHC experiments. The stringent requirements of the ALICE Inner Tracking System (ITS) in terms of material budget, radiation hardness, readout speed and a low power consumption have thus lead to the choice of MAPS as baseline...
The analog performance of hetero-junction vertical NanoWire Tunnel FETs (NW-TFETs) with different Ge source compositions (27% and 46%) is studied and compared to Si source devices. Although the NW-TFETs with the highest amount of Ge at the source present the highest transconductance (lower bandgap and higher BTBT predominance), the NW-TFETs with 27% Ge source present a better intrinsic voltage gain...
Systems-on-Chip (SoC) and Systems-in-Package (SiP) are the most feasible solutions to fulfil the requirements of the new communication systems [1]. Both solutions will lead to a fundamental change in the design of analogue front-end architectures. It requires a high performance technology with devices that provide complex digital functionalities and can easily achieve operating frequencies in the...
This paper describes the conception, designs consideration and fabrication process of a novel MEMS microphone. The presented microphone not only uses a new architecture, the sensitive part being beams moving within the plane of the substrate, but also uses an innovative detection means with Silicon piezo-resistive nanogauges. Modelization will consider acoustic and mechanical interactions. Besides,...
An SoC with ARM® Cortex™-M0 CPU cores and SRAMs is implemented in both 65nm baseline and Deeply Depleted Channel™ (DDC) technologies. DDC technology demonstrates more than 50% active and static power reduction for the CPU cores at matched 350 MHz speed via VDD scaling and body biasing. Alternatively DDC technology demonstrates 35% speed increase at matched power. The results hold across process corners...
CMOS compatible avalanche photodiode is designed, modeled and fabricated. Calculated mean gain, avalanche breakdown voltage, excess-noise factor, as well as the measured dark-current and spectral response are reported.
YBa2Cu3O6+x (YBCO) oxides are semiconductors (SC) at low oxygen content. IR detectors were processed with amorphous SC films, either planar or metal/YBCO/metal tri-layers. The response at 850 nm exhibited a low noise and fast pyroelectric behavior. THz detectors with planar antennas are considered.
The combination of increasing working frequencies and shrinking transistor size following the Moore's Law, dictate the design and fabrication of complex System-on-Chip (SoC) designs, where the digital processing core, SRAMs and embedded flash memories, analog IPs and I/O cells, are integrated onto the same die. Therefore, noise integrity has become a critical concern for high-speed SoC designers,...
MOSFETs and Tunnel-FETs (TFETs) based on arrays of nanowires (NWs) with 10 × 10 nm2 cross-section have been fabricated with strained silicon on insulator substrates. MOSFET devices show near ideal subthreshold slope close to 60 mV/dec proving excellent channel control achieved by high-klmetal gate stack. As expected fundamental differences between MOSFETs and TFETs in current-voltage characteristics...
This paper reports on the state of the art silicon micromachined microphone utilizing a dual poly silicon membrane system. MEMS chips from 1.4mm down to 1.0mm side length are applied for mobile communication. Design aspects related with key performance parameters such as sensitivity, signal to noise ration and distortion are discussed. Sensitivity of − 38BV/Pa is achieved for different microphone...
Low-frequency noise (LFN) has been investigated in tri-gate (TG) Si nanowire (NW) FET. We have carefully measured and analyzed LFN for gate length down to 40 nm and cross-section width down to 10 nm. Drain current noise spectral density has been measured in linear region from weak to strong inversion of transistor operation. In particular, we have shown that the LFN behavior is in good agreement with...
Ancient Chinese tablets are invaluable in terms of historical and aesthetic value. Automatic character segmentation of images from degraded tablets poses a challenging problem. Therefore, this paper proposes a new character segmentation method that utilizes an enhanced stroke filter and an energy propagation process based on local layout information. A ground-truth dataset was established to evaluate...
Under the platform of a high-speed package system, a modeling method considering all the significant effects from the chip, package, and board levels is developed to identify and investigate the critical nets affecting the signal or power integrity(SI/PI). For SI issues, accurate modelings for signal channel are verified by system of high speed line. The following what-if analyses help to identify...
The motion segmentation problem is a special case of the general subspace segmentation problem that clusters data drawn from an unknown union of subspaces. This paper provides a nonlinear model for general subspace segmentation problem and presents an algorithm to compute the optimal solution for noiseless data. We also provide a combined algorithm that addresses issues with noise to some extent....
The problem of simultaneous message transmission and state amplification in a Gaussian channel with additive Gaussian state is studied when the sender has imperfect non-causal knowledge of the state sequence. Inner and outer bounds to the rate-state-distortion region are provided. The coding scheme underlying the inner bound combines analog signaling and Gelfand-Pinsker coding, where the latter deviates...
The Distributed Video Coding (DVC) paradigm offers lightweight encoding capabilities which are suitable for devices with limited computational resources. Moreover, DVC techniques can theoretically achieve the same coding efficiency as the traditional video coding schemes which employ more complex encoders. However, the performance of practical DVC architectures is still far from such theoretical bounds,...
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