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检索条件"任意字段=Conference on Ph.D Research in Microelectronics and Electronics"

共 834 条记录，以下是291-300 订阅

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SPAd-based 3d sensors for high ambient illumination

SPAD-based 3D sensors for high ambient illumination

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ph.d. research in microelectronics and electronics (PRIME)

作者： Maik Beer Bedrich J. Hosticka Rainer Kokozinski Fraunhofer Institute for Microelectronic Circuits and Systems (IMS) Duisburg Germany

ISBN: (纸本)9781509004942

With the possibility of fabricating single-photon avalanche diodes in standard CMOS processes, arrays for range imaging applications have been developed. Proper operation in high ambient illumination environments is one of the major issues of scannerless sensors published so far. In this paper a theoretical study of the direct and indirect working principle regarding high ambient illumination is shown. Further, new concepts based on these principles to reduce the sensitivity to ambient light are presented.

关键词： photonics Lighting Histograms Pulse measurements Probability density function Sensor arrays

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design of differential delay lines in low temperature cofired ceramics

Design of differential delay lines in low temperature cofire...

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ph.d. research in microelectronics and electronics (PRIME)

作者： Pablo Benet Colom Francisco Ramos Javier Sieiro Córdoba Research & development and innovation department Francisco Albero S.A.U. Spain Radiofrequency department University of Barcelona Barcelona Spain

ISBN: (纸本)9781509004942

In this paper, a 3d differential delay line fabricated using a low temperature cofired ceramic (LTCC) technology is presented. The main feature of this component is its high value of delay density per unit area when compared with other differential geometries such as meanders, edge-coupled lines or twisted pair lines. An increase of a factor of 6 in the delay density is demonstrated, whereas distortion, attenuation and return loss are kept inside reasonable values.

关键词： delay lines delays Three-dimensional displays distortion Scattering parameters Substrates phased arrays

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A 4-mode reconfigurable low noise amplifier for implantable neural recording channels

A 4-mode reconfigurable low noise amplifier for implantable ...

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ph.d. research in microelectronics and electronics (PRIME)

作者： José Luis Valtierra Ángel Rodríguez-Vázquez Manuel delgado-Restituto Institute of Microelectronics of Seville University of Sevilla Seville SPAIN

ISBN: (纸本)9781509004942

In this paper a reconfigurable implantable low noise amplifier for the recording of neural signals is presented. It is comprised by low-power and noise efficient current reuse OTAs in its direct path. The proposed architecture allows for an active feedback to set the high-pass corner in place of the commonly used pseudoresistor. Bandwidth selectivity is achieved by circuit reconfigurability which changes the pole frequencies of the system without impacting the total power consumption. Simulation results in AMS 0.18μm technology validate the proposed architecture in both nominal and corner process conditions with an estimated total power consumption of 454nW.

关键词： Bandwidth Power demand Gain Capacitors Transconductance Tuning Simulation

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ESd protection characterization by an extended Wunsch-Bell plot

ESD protection characterization by an extended Wunsch-Bell p...

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ph.d. research in microelectronics and electronics (PRIME)

作者： Patrick Schrey Graz University of Technology Institute of Electronics Graz Austria

ISBN: (纸本)9781509004942

Extensive knowledge of the protection device's behavior under electrostatic discharge stress is mandatory to characterize protective elements and systems. This paper gives a brief overview on different electrostatic discharge protection concepts, including general considerations on diverting stress, trigger mechanisms, and their limitations. The protection approaches have to be selected in conjunction with the operational signals to avoid malfunction, increased power consumption, or physical failure. The Wunsch-Bell model is extended by means of an additional axis incorporating the rise time to better characterize different protective circuitry from component- to system-level. This allows for more accurate prediction of system robustness possibly preventing costly re-designs.

关键词： Electrostatic discharges Threshold voltage Voltage measurement Stress Robustness Integrated circuits Transmission line measurements

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Circuit considerations and design for MEMS capacitance measurements

Circuit considerations and design for MEMS capacitance measu...

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ph.d. research in microelectronics and electronics (PRIME)

作者： d. Andrade-Miceli P. Giounalis S. Gorreta J. Pons-Nin M. dominguez-Pumar E. Blokhina School of Electrical Electronic and Communications Engineering University College Dublin Dublin Ireland Micro and Nano Technologies Group Electronic Engineering Department Technical University of Catalonia Barcelona Spain

ISBN: (纸本)9781509004942

Modern CMOS integrated technologies integrate a variety of complex multi-physics components which contribute a growing number of challenges in the circuit design. This paper is focused on the description of the requirements and technical aspects which should be considered for successful circuit design involving capacitive MEMS. To illustrate the process, the design of an input stage for a MEMS dielectric charge bipolar control method is presented.

关键词： Micromechanical devices Capacitance Varactors Field programmable gate arrays Application specific integrated circuits

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Integer-based digital processor for the estimation of phase synchronization between neural signals

Integer-based digital processor for the estimation of phase ...

引用

ph.d. research in microelectronics and electronics (PRIME)

作者： James Brian Romaine Manuel delgado-Restituto Juan Antonio Leñero-Bardallo Ángel Rodríguez-Vázquez Institute of Microelectronics of Sevilla and University of Sevilla Seville SPAIN

This paper reports a low area, low power, integer-based neural digital processor for the calculation of phase synchronization between two neural signals. The processor calculates the phase-frequency content of a signal by identifying the specific time periods associated with two consecutive minima. The simplicity of this phase-frequency content identifier allows for the digital processor to utilize only basic digital blocks, such as registers, counters, adders and subtractors, without incorporating any complex multiplication and or division algorithms. The low area and power consumptions make the processor an extremely scalable device which would work well in closed loop neural prosthesis for the treatment of neural diseases.

关键词： Synchronization Registers Radiation detectors Indexes Smoothing methods Field programmable gate arrays Silicon

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Capacitive coupling analysis using double-surface ICs for low cost passive RFId tags

Capacitive coupling analysis using double-surface ICs for lo...

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ph.d. research in microelectronics and electronics (PRIME)

作者： Lorenzo Pirrami danilo demarchi Marco Mazza Department of Electronics and Telecommunication (DET) Politecnico di Torino Torino Italy

ISBN: (纸本)9781509004942

This paper introduces a new concept of liquid phase inkjet-based fabrication process for low cost, low range and high throughput Radio Frequency Identification (RFId) tags. In this research, passive chips have one pad on the top of the chip and the back of the silicon die (bulk) acting as the second pad. Such a chip can be delivered, using an inkjet-based process, onto one pad of an antenna instead to be precisely placed using flip-chip method. This allows producing RFId tag only with printing steps, reducing considerably the assembly and hence the overall costs. We demonstrate the feasibility of this approach by analyzing the capacitive coupling obtained using double-surface chips.

关键词： decision support systems Passive RFId tags Radiofrequency integrated circuits Printing Couplings

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An efficient model for evaluating current in silicon nanocrystals

An efficient model for evaluating current in silicon nanocry...

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ph.d. research in microelectronics and electronics (PRIME)

作者： M.A. Mehdy A. Antidormi M. Graziano G. Piccinini Department of Electronics and Telecommunications Politecnico di Torino Torino Italy

ISBN: (纸本)9781509004942

In this paper we present an efficient model for current calculation through silicon nanocrystals. The model uses self consistent field approach to calculate the evolution of transmission spectra and Landauer formalism for current calculations. We implemented the split in spectra for different spin so that the model works in case of coulomb blockade. A few simulations were performed using a physical simulator to extract parameters to be inserted in model. The current voltage characteristics were calculated from the model for structures with different geometry and coupling strength between the lattice and contacts. The results from the model show good accordance with those from physical simulator and are obtained with more than two orders of magnitude speed up.

关键词： Computational modeling Solid modeling Silicon Nanocrystals Integrated circuit modeling Couplings Electric potential

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Investigation of stepwise charging circuits for power-clock generation in Adiabatic Logic

Investigation of stepwise charging circuits for power-clock ...

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ph.d. research in microelectronics and electronics (PRIME)

作者： Himadri Singh Raghav Vivian A. Bartlett Izzet Kale Applied DSP and VLSI Research Group University of Westminster London United Kingdom

ISBN: (纸本)9781509004942

The generation of power-clocks in adiabatic integrated circuits is investigated. Specifically, we consider stepwise charging strategies (2, 3, 4, 5, 6, 7, and 8-step) based on tank-capacitor circuits, comparing them in terms of their energy recovery properties and complexity. We show that energy recovery achievable depends on the tank-capacitor size. We also show that tank-capacitor sizes can be reduced as their number increases concluding that combined tank capacitance (CTT) versus load capacitance (CL) ratio is the significant parameter. We propose that using a CTT/CL ratio of 10 and using a 4-step charging power-clock constitute appropriate trade-offs in practical circuits.

关键词： Capacitors Adiabatic Capacitance Complexity theory Energy dissipation Circuit stability Switches

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A self-organization approach for layout floorplanning problems in analog IC design

A self-organization approach for layout floorplanning proble...

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ph.d. research in microelectronics and electronics (PRIME)

作者： daniel Marolt Jürgen Scheible Göran Jerke Vinko Marolt Reutlingen University Robert Bosch Center for Power Electronics Reutlingen Germany Robert Bosch GmbH Automotive Electronics Reutlingen Germany

In analog layout design, chip floorplans are usually still handcrafted by human experts. Particularly, the nondiscrete variability of block dimensions must be exploited thereby, which is a serious challenge for optimization-based algorithmic floor-planners. This paper presents a fundamentally new automation approach based on self-organization, in which floorplan blocks can autonomously move, rotate and deform themselves to jointly let compact results emerge from a synergistic flow of interaction. Our approach is able to minimize area and wirelength, supports nonslicing floorplan structures, can consider fully variable block dimensions, accounts for a fixed rectilinear boundary, and works absolutely deterministic. The approach is innovatively different from conventional, top-down oriented floorplanning algorithms.

关键词： Layout Interference Algorithm design and analysis Automation Integrated circuits Automotive engineering Optimization

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