Modified Split-Phase Switching with Improved Fly Capacitor Utilization in a 48V-to-POL Dual Inductor Hybrid-Dickson Converter

The dynamic properties of liquid phase-change materials (PCMs), such as viscosity η and the atomic self-diffusion coefficientD, play an essential role in the ultrafast phase switching behavior of novel nonvolatile phase-change memory applications. To connect η toD, the Stokes-Einstein relation (SER) is commonly assumed to be valid at high temperatures near or above the melting temperatureTmand is often used for assessing liquid fragility (or crystal growth velocity) of technologically important PCMs. However, using quasi-elastic neutron scattering, we provide experimental evidence for a breakdown of the SER even at temperatures aboveTmin the high–atomic mobility state of a PCM, Ge1Sb2Te4. This implies that although viscosity may have strongly increased during cooling, diffusivity can remain high owing to early decoupling, being a favorable feature for the fast phase switching behavior of the high-fluidity PCM. We discuss the origin of the observation and propose the possible connection to a metal-semiconductor and fragile-strong transition hidden belowTm.

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Finite element modeling of a nanowire-based oscillator achieved through solid–liquid phase switching for GHz operation

Solid-State Electronics ◽

10.1016/j.sse.2012.05.067 ◽

2012 ◽

Vol 78 ◽

pp. 97-101 ◽

Cited By ~ 2

Author(s):

Adam Cywar ◽

Ali Gokirmak ◽

Helena Silva

Keyword(s):

Finite Element ◽

Liquid Phase ◽

Finite Element Modeling ◽

Phase Switching ◽

Element Modeling ◽

Solid Liquid

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Integrated Balanced BPSK Modulator for Millimeter Wave Systems

Active and Passive Electronic Components ◽

10.1155/2007/69515 ◽

2007 ◽

Vol 2007 ◽

pp. 1-4

Author(s):

Ashok Mittal ◽

Asok De

Keyword(s):

Millimeter Wave ◽

Incident Wave ◽

Insertion Loss ◽

Pulse Width ◽

Coplanar Line ◽

Phase Switching ◽

High Isolation ◽

Average Loss ◽

Hybrid Junction ◽

Signal Output

This paper details the design of integrated balanced PSK modulator using finline coplanar line hybrid junction. The PSK signal output is in suspended stripline with incident wave carrier in finline. Schottky barrier Diode MA4E2037 has been used for modulation. The balanced configuration offers high isolation between the carrier input port and the modulated carrier output port and thus the pulse width variations and amplitude deviations are suppressed. An insertion loss imbalance of±1.5 dB with an average loss of 2 dB in the two switching states has been achieved over 38.9 to 40 GHz. The phase imbalance is±10 degrees with phase switching from 180 to 199 degrees As the PSK output signal is in suspended stripline, two BPSK modulators can be easily combined together to work as QPSK modulator.

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Signal Preemption Control of Emergency Vehicles Based on Timed Colored Petri Nets

Discrete Dynamics in Nature and Society ◽

10.1155/2018/7095485 ◽

2018 ◽

Vol 2018 ◽

pp. 1-12 ◽

Cited By ~ 1

Author(s):

Haibo Mu ◽

Linzhong Liu ◽

Xiaojing Li

Keyword(s):

Petri Nets ◽

Control Strategies ◽

Traffic Signal ◽

Urban Traffic ◽

Colored Petri Nets ◽

Current Phase ◽

Emergency Vehicle ◽

Phase Switching ◽

Emergency Vehicles ◽

Timed Colored Petri Nets

This paper focuses on the use of timed colored Petri nets (TCPN) to study emergency vehicle (EV) preemption control problem. TCPN is adopted to establish an urban traffic network model composed of three submodels, namely, traffic flow model, traffic signal display and phase switch model, and traffic signal switch control model. An EV preemption optimization control system, consisting of monitoring subsystem, phase time determination subsystem, and phase switching control subsystem, is designed. The calculation method of the travelling speed of EV on road sections is presented, and the methods of determining the actual green time of current phase and the other phase are given. Some computational comparisons are performed to verify the signal preemption control strategies, and simulation results indicate that the proposed approach can provide efficient and safe running environments for emergency vehicles and minimize EV’s interference to social vehicles simultaneously.

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