IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications
1558-1268
Cơ quản chủ quản: N/A
Các bài báo tiêu biểu
The effects of generation redispatch on Hopf bifurcations in electric power systems
Tập 49 Số 8 - Trang 1180-1186 - 2002
In this paper, we examine how varying the generation redispatch can improve the
system stability margins with respect to Hopf bifurcations, as well as
robustness to uncertainties in load modeling and distribution. It is seen that
an optimal selection of load following units plays a key role in accomplishing
these objectives. An optimal redispatch strategy is proposed, and is verified
through a var...
#Power generation #Bifurcation #Power system modeling #Voltage #Load modeling #Eigenvalues and eigenfunctions #Robust stability #Power system stability #Differential equations #Power system dynamics
Modeling the thermal response of semiconductor devices through equivalent electrical networks
Tập 49 Số 8 - Trang 1187-1197 - 2002
The paper presents a general approach for modeling the effects of thermal
response in semiconductor devices as they are seen at the electrical terminals.
It is shown that this can be achieved by properly connecting at the electrical
ports an equivalent electrical network representing the transformed thermal
impedance. The equivalent model is employed to investigate electrothermal
interactions in M...
#Semiconductor devices #Electrothermal effects #MOSFETs #Resistance heating #Resonance #Circuits #Temperature #Thermal resistance #Impedance #Equations
A high-input-impedance buffer
Tập 49 Số 8 - Trang 1209-1211 - 2002
The input impedance of high-input-impedance buffers with a bootstrapped biasing
circuit and supply rails may attain values much larger then it would correspond
to the open-loop gain of the operational amplifier used. Similarly, the
efficiency of suppression of capacitance connected to the inputs is unexpectedly
high, although not that of the opamp input capacitance itself. Good agreement of
experi...
#Operational amplifiers #Rail to rail amplifiers #Signal to noise ratio #Impedance #Circuits #Parasitic capacitance #Feedback #Power supplies #Power amplifiers #Voltage
An effective algorithm for multiway hypergraph partitioning
Tập 49 Số 8 - Trang 1079-1092 - 2002
In this paper, we propose an effective multiway hypergraph partitioning
algorithm. We introduce the concept of net-gain and embed it in the selection of
cell moves. Unlike traditional FM-based iterative improvement algorithms in
which the selection of the next cell to move is only based on its cell gain, our
algorithm selects a cell based on both its cell-gain and the sum of all
net-gains for thos...
#Partitioning algorithms #Iterative algorithms #Databases #Very large scale integration #Circuit synthesis #Decision support systems #Data mining #NP-hard problem #NP-complete problem
Design and simulation of a single-electron random-access memory array
Tập 49 Số 9 - Trang 1370-1375 - 2002
A single-electron random-access memory array is designed and its operation is
analyzed using Monte Carlo simulation. This memory array utilizes a basic
single-electron memory cell that has been recently fabricated. Bits of
information are represented by the presence or absence of a single or a small
number of electrons at conducting islands. Simulation shows that selective read
and write operation...
#Single electron memory #Circuit simulation #Electron traps #Computational modeling #Computer simulation #Application software #CMOS technology #Read-write memory #Power dissipation #Inverters
A loop-breaking method for the analysis and simulation of feedback amplifiers
Tập 49 Số 8 - Trang 1045-1061 - 2002
Two-circuit models for feedback subcircuits are developed from a modification to
the two-port method of feedback amplifier analysis and are applied in a method
to break the feedback loop. These models are terminally equivalent to linear and
nonlinear subcircuits, have physically-disconnected topologies, and employ
dependent sources to control lateral signal transfer with a switch-like on or
off ma...
#Analytical models #Feedback amplifiers #Feedback loop #Operational amplifiers #SPICE #Integrated circuit interconnections #Circuit simulation #Voltage #Circuit topology #Equivalent circuits
A modified Volterra series approach for nonlinear dynamic systems modeling
Tập 49 Số 8 - Trang 1118-1128 - 2002
This paper describes a modeling approach for nonlinear dynamic systems based on
a modified Volterra series; by comparing the truncation error of this series
with that of the classical Volterra one, we outlined that, under the assumption
of short-term nonlinear memory effects, the modified series enables a
single-fold nonlinear convolution integral to be adopted also in the presence of
strong nonli...
#Modeling #Nonlinear systems #Nonlinear dynamical systems #Finite wordlength effects #Convolution #Bandwidth #Microscopy #Signal processing #Transfer functions #Voltmeters
Noise analysis of phase-locked loops
Tập 49 Số 9 - Trang 1309-1316 - 2002
This work addresses the problem of noise analysis of phase-locked loops (PLLs).
The problem is formulated as a stochastic differential equation and is solved in
the presence of circuit white noise sources yielding the spectrum of the PLL
output. Specifically, the effect of loop filter characteristics, phase-frequency
detector, and phase noise of the open-loop voltage-controlled oscillator (VCO)
on...
#Phase noise #Phase locked loops #Voltage-controlled oscillators #Filters #Phase detection #Shape measurement #Circuit noise #Phase frequency detector #Phase measurement #Stochastic resonance
A minimal integral nonlinearity criterion to optimize the design of a new tanh/sinh-type bipolar transconductor
Tập 49 Số 8 - Trang 1062-1070 - 2002
We report on the use of a simple design optimization criterion for obtaining
maximum static transfer function linearity. It is based on an analytic function
that corresponds to the integral nonlinearity of the circuit. The criterion may
be useful, either as an analytic tool to gain insight into the circuit's
behavior, or as an efficient computational alternative to calculating total
harmonic disto...
#Design optimization #Transconductors #Linearity #Transfer functions #Harmonic analysis #Circuit analysis computing #Total harmonic distortion #Circuit simulation #Transconductance #Voltage
Lyapunov-theory-based radial basis function networks for adaptive filtering
Tập 49 Số 8 - Trang 1215-1220 - 2002
Two important convergence properties of Lyapunov-theory-based adaptive filtering
(LAF) adaptive filters are first explored. The LAF finite impulse response and
infinite impulse response adaptive filters are then realized using the radial
basis function (RBF) neural networks (NNs). The proposed adaptive RBF neural
filtering system possesses the distinctive properties of RBF NN and the LAF
filtering...
#Radial basis function networks #Adaptive filters #IIR filters #Neural networks #Finite impulse response filter #Filtering #Lyapunov method #Convergence #Stochastic processes #Stability