Time Resolved Imaging at low power supply on 45nm technology

2011 ◽  
Author(s):  
G. Bascoul ◽  
P. Perdu ◽  
G. Celi ◽  
S. Dudit ◽  
D. Lewis
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Time Resolved ◽  
Time Resolved Imaging

Activity Analysis at Low Power Supply on 45nm Technology

2011 ◽  
Author(s):  
Guillaume Bascoul ◽  
Philippe Perdu ◽  
Kevin Sanchez ◽  
Dean Lewis ◽  
Sylvain Dudit ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Low Power ◽  
Power Supply ◽  
Control Line ◽  
Time Resolved ◽  
Analysis Task ◽  
Wide Range ◽  
Complex Functions ◽  
Time Resolved Imaging ◽  
And Control

Abstract VLSI internal testing through silicon substrate has been widely studied and techniques like Time Resolved Emission has given impressive results. Nevertheless, Integrated Circuits (IC) are still evolving with more and more complex functions and various kinds of signals that could be split into two main categories: data and control. Controls activate specific block and according to the wide range of different blocks and device complexity, the first analysis task is to check block activity related to control line status. In this paper, we show how Time Resolved Imaging can precisely answer this challenge even in up-to-date technologies at low power supply.

AlInAs/GaInAs on InP HEMTs for low power supply voltage operation of high power-added efficiency microwave amplifiers

1993 ◽  
Vol 29 (15) ◽  
pp. 1324 ◽  
Author(s):  
L.E. Larson ◽  
M.M. Matloubian ◽  
J.J. Brown ◽  
A.S. Brown ◽  
M. Thompson ◽  
...  
Keyword(s):  
Low Power ◽  
High Power ◽  
Power Supply ◽  
Supply Voltage ◽  
Power Supply Voltage ◽  
Power Added Efficiency ◽  
Microwave Amplifiers

scholarly journals Giant enhancement of THz-frequency optical nonlinearity by phonon polariton in ionic crystals

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yao Lu ◽  
Qi Zhang ◽  
Qiang Wu ◽  
Zhigang Chen ◽  
Xueming Liu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Optical Nonlinearity ◽  
Ionic Crystals ◽  
Nonlinear Optical Susceptibility ◽  
Time Resolved ◽  
Light Coupling ◽  
Tremendous Progress ◽  
Fundamental Research ◽  
Ionic Contribution ◽  
Time Resolved Imaging

AbstractThe field of nonlinear optics has grown substantially in past decades, leading to tremendous progress in fundamental research and revolutionized applications. Traditionally, the optical nonlinearity for a light wave at frequencies beyond near-infrared is observed with very high peak intensity, as in most materials only the electronic nonlinearity dominates while ionic contribution is negligible. However, it was shown that the ionic contribution to nonlinearity can be much larger than the electronic one in microwave experiments. In the terahertz (THz) regime, phonon polariton may assist to substantially trigger the ionic nonlinearity of the crystals, so as to enhance even more the nonlinear optical susceptibility. Here, we experimentally demonstrate a giant second-order optical nonlinearity at THz frequency, orders of magnitude higher than that in the visible and microwave regimes. Different from previous work, the phonon-light coupling is achieved under a phase-matching setting, and the dynamic process of nonlinear THz generation is directly observed in a thin-film waveguide using a time-resolved imaging technique. Furthermore, a nonlinear modification to the Huang equations is proposed to explain the observed nonlinearity enhancement. This work brings about an effective approach to achieve high nonlinearity in ionic crystals, promising for applications in THz nonlinear technologies.

scholarly journals A Low Power AC/DC Interface for Wind-Powered Sensor Nodes

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1823
Author(s):  
Mohammad Haidar ◽  
Hussein Chible ◽  
Corrado Boragno ◽  
Daniele D. Caviglia
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Energy Harvester ◽  
Optimization Techniques ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Constant Voltage ◽  
Interface Circuit ◽  
Switching Converter ◽  
Input Signals

Sensor nodes have been assigned a lot of tasks in a connected environment that is growing rapidly. The power supply remains a challenge that is not answered convincingly. Energy harvesting is an emerging solution that is being studied to integrate in low power applications such as internet of things (IoT) and wireless sensor networks (WSN). In this work an interface circuit for a novel fluttering wind energy harvester is presented. The system consists of a switching converter controlled by a low power microcontroller. Optimization techniques on the hardware and software level have been implemented, and a prototype is developed for testing. Experiments have been done with generated input signals resulting in up to 67% efficiency for a constant voltage input. Other experiments were conducted in a wind tunnel that showed a transient output that is compatible with the target applications.

scholarly journals Research on anode power supply of low-power Hall thruster

2021 ◽  
Vol 1754 (1) ◽  
pp. 012167
Author(s):  
JIA Hangyu ◽  
QU Chengzhi ◽  
JI Yuhui ◽  
ZHOU Guangrui ◽  
WU Suliang
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Hall Thruster

A calibration-free low-power supply-pushing reduction circuit (SPRC) for LC VCOs

2017 ◽  
Author(s):  
Muhammad Swilam ◽  
Ahmed Naguib ◽  
Brian Dupaix ◽  
Waleed Khalil ◽  
Ayman Fayed
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Calibration Free

scholarly journals An Isolated Power Factor Corrected Cuk Converter with Integrated Magnetics for Brushless DC Ceiling Fan Applications

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1720
Author(s):  
Hashim Raza Khan ◽  
Majida Kazmi ◽  
Haris Bin Ashraf ◽  
Muhammad Hashir Bin Khalid ◽  
Abul Hasan ◽  
...  
Keyword(s):  
Low Power ◽  
Power Factor ◽  
Power Supply ◽  
Failure Modes ◽  
Torque Ripple ◽  
Current Loop ◽  
Motor Torque ◽  
Cuk Converter ◽  
Integrated Magnetics ◽  
Home Appliances

The usage of BLDC motors in the low-power range is increasing rapidly in home appliances such as ceiling fans. This has necessitated the development of reliable, compact and efficient AC-DC power supplies for motor drive circuitry. This paper presents a power supply design consisting of an AC-DC isolated PFC Cuk converter with integrated magnetics that supplies a single-shunt voltage source inverter for the sensorless drive of the BLDC fan motor. The proposed power supply design is comprised of an integrated magnetics structure in which the two inductors and the transformer windings share the same core. The zero input and output ripple current conditions have been derived from the reluctance model of the magnetic assembly. Smooth operation of the motor by minimizing the motor torque ripples is evident from the results. The Cuk converter operates in continuous conduction mode (CCM), employing the current multiplier method. The CCM-based current multiplier control loop ensures a near-unity power factor as well as low total harmonic distortion in the supply current. The current loop also provides over-current protection, enhancing reliability of the system. Moreover, the speed of the BLDC motor is controlled by the field oriented control (FOC) algorithm, which enables direct operation with alternate energy sources such as batteries and solar photovoltaic panels. The performance of the proposed supply is validated: motor torque ripple is reduced to only 2.14% while maintaining 0.999 power factor and only 4.72% THD at full load. Failure modes analysis has also been performed through software simulations, using the PLECS simulation environment. Due to the reliable power supply design with low ripples, it is well suited for low-power BLDC motors in home appliances and small power tools, in addition to ceiling fans.

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