IEEE Transactions on Circuits and Systems II: Express Briefs

Issue 6 • June 2005

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Displaying Results 1 - 22 of 22
  • Table of contents

    Publication Year: 2005, Page(s): c1
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  • IEEE Transactions on Circuits and Systems—II: Express Briefs publication information

    Publication Year: 2005, Page(s): c2
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  • Telegraphy equation from Weber's electrodynamics

    Publication Year: 2005, Page(s):289 - 292
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB) | HTML iconHTML

    We derive the telegraphy equation according to Weber's electrodynamics for signal propagating along a very long bidimensional wire in the shape of a rectangular strip of zero thickness. We also derive this equation for a twin lead composed by two of these parallel very long bidimensional wires facing each other. We compare this result with classical electromagnetism. View full abstract»

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  • Robust H control of singular impulsive systems with uncertain perturbations

    Publication Year: 2005, Page(s):293 - 298
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    This paper discusses the problem of robust H∞ control for singular impulsive uncertain systems. Some new fundamental properties of singular systems with impulse effect are derived. Based on the Riccati inequality approach, sufficient conditions for robust H∞ criteria of the corresponding singular impulsive closed-loop systems are established. A simple approach to ... View full abstract»

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  • Low-error carry-free fixed-width multipliers with low-cost compensation circuits

    Publication Year: 2005, Page(s):299 - 303
    Cited by:  Papers (21)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    In this paper, we propose a low-error fixed-width redundant multiplier design. The design is based on the statistical analysis of the error compensation value of the truncated partial products in binary signed-digit representation with modified Booth encoding. The overall truncation error is significantly reduced compared with other previous approaches. Furthermore, the derived relationship betwee... View full abstract»

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  • Modeling of voltage output charge-pump phase frequency detector in tuning loops

    Publication Year: 2005, Page(s):304 - 307
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB) | HTML iconHTML

    Resonant inverters mostly employ tuning loops based on a phase-locked-loop (PLL) circuit. Some commercially available PLL chips, frequently used in this application, include a voltage output charge-pump phase frequency detector (CP/PFD) rather than well-known current output CP/PFD, which complicates the analysis of the loop. We present a new model for voltage output CP/PFD and an analysis of a tun... View full abstract»

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  • Packet-switched on-chip interconnection network for system-on-chip applications

    Publication Year: 2005, Page(s):308 - 312
    Cited by:  Papers (20)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB) | HTML iconHTML

    Increasing complexity of a system-on-chip design demands efficient on-chip interconnection architecture such as on-chip network to overcome limitations of bus architecture. In this brief, we propose a packet-switched on-chip interconnection network architecture, through which multiple processing units of different clock frequencies can communicate with each other without global synchronization. Th... View full abstract»

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  • Resonant converter with inherent short-circuit protection

    Publication Year: 2005, Page(s):313 - 316
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB) | HTML iconHTML

    Using a systematic procedure for classifying resonant converters, we have synthesized a zero-voltage switching resonant structure with inherent short-circuit protection. We analyze the operating modes of the disclosed converter and derive the control characteristic curve. Experimental verification is presented in a 100-W prototype. View full abstract»

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  • Low-voltage high-drive CMOS current feedback op-amp

    Publication Year: 2005, Page(s):317 - 321
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB) | HTML iconHTML

    A novel CMOS current feedback op-amp is presented. The solution works using a low supply voltage and provides a wide input/output swing as well as a high current driving capability. Experimental results from a prototype implemented in a 0.35-μm technology and powered with 1.5 V are also given. The circuit exhibits a better than 500 kHz closed-loop bandwidth and a ±1 mA current drive capa... View full abstract»

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  • Nonlinear discrete-time analysis of the fixed frequency switch-mode DC-DC converters dynamics

    Publication Year: 2005, Page(s):322 - 326
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB) | HTML iconHTML

    This brief suggests a modified approach to the discrete-time analysis of fixed frequency switch-mode dc-dc converters. The method presented here is based on the formulation of a nonlinear difference equation with respect to the duty cycle, which describes the closed-loop behavior of the system considered. The difference equation allows the complete examination of the system's steady state during n... View full abstract»

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  • High-performance and simple CMOS interface circuit for differential capacitive sensors

    Publication Year: 2005, Page(s):327 - 330
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB) | HTML iconHTML

    A new concept of current-mode interface circuit for differential-capacitance transducers is proposed. The solution is suitable for integration and comprises a capacitance-to-current conversion that enables low-voltage operation, provides both high speed and accuracy, and minimizes post-processing. View full abstract»

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  • Analyzing the effect of the phase-jitter in the operation of second order phase-locked loops

    Publication Year: 2005, Page(s):331 - 335
    Cited by:  Papers (20)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    Phase-locked loops (PLLs) are designed to extract timing signals in telecommunication networks. Noise, cross-talk, inter-symbol interference, quantization noise, and signal distortion are responsible for oscillations in the time between two successive transitions of the clock or data signal. It appears as an accidental phase modulation superposed to the original signal. This phenomenon is called t... View full abstract»

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  • A new SNR's estimator for QPSK Modulations in an AWGN channel

    Publication Year: 2005, Page(s):336 - 338
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (120 KB) | HTML iconHTML

    Signal-to-noise ratio (SNR) measurement is required in many receivers and systems of communications. In this brief, we derive a new SNR's estimator based on the second and fourth-order moments of the complex signals of quadrature phase-shift keying modulations. The mean square error of the estimated SNR by the proposed algorithm is smaller than that by other methods for a low SNR with limited samp... View full abstract»

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  • Direct frequency modulation of an ADPLL for bluetooth/GSM with injection pulling elimination

    Publication Year: 2005, Page(s):339 - 343
    Cited by:  Papers (16)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    We propose and demonstrate a Gaussian frequency-shift keying and Gaussian minimum-shift keying (GMSK) pulse-shape filtering for wireless RF transmitters with an arbitrary reference frequency. The filter is software controlled to work in a multistandard radio. Spurs, which are due to the frequency injection pulling, in cases when the reference harmonics are close enough to the oscillating frequency... View full abstract»

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  • Hyperchaotic spiking oscillators with periodic pulse-train input

    Publication Year: 2005, Page(s):344 - 348
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    This paper studies simple spiking oscillators with periodic pulse-train input. The circuits are piecewise linear and a normal form circuit equation is derived in order to extract essential parameters. The return map and its Jacobian matrix can be described precisely. If the input is not present, the circuits can exhibit hyperchaotic and periodic attractors. As the input is applied, the attractors ... View full abstract»

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  • Novel global asymptotic stability criteria for delayed cellular neural networks

    Publication Year: 2005, Page(s):349 - 353
    Cited by:  Papers (143)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB) | HTML iconHTML

    This brief provides improved conditions for the existence of a unique equilibrium point and its global asymptotic stability of cellular neural networks with time delay. Both delay-dependent and delay-independent conditions are obtained by using more general Lyapunov-Krasovskii functionals. These conditions are expressed in terms of linear matrix inequalities, which can be checked easily by recentl... View full abstract»

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  • Hash function based on chaotic tent maps

    Publication Year: 2005, Page(s):354 - 357
    Cited by:  Papers (61)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB) | HTML iconHTML

    In cryptographic applications, hash functions are used within digital signature schemes to provide data integrity (e.g., to detect modification of an original message). In this brief, we propose a new 2ℓ -bit iterated hash function based on chaotic tent maps. This hash function can be expected to have at least the same computational security against target attack, free-start target attack, c... View full abstract»

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  • Special issue on advances on life science systems and applications

    Publication Year: 2005, Page(s): 358
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  • 2006 IEEE International Symposium on Circuits and Systems (ISCAS 2006)

    Publication Year: 2005, Page(s): 359
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  • IEEE order form for reprints

    Publication Year: 2005, Page(s): 360
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  • IEEE Circuits and Systems Society Information

    Publication Year: 2005, Page(s): c3
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  • IEEE Transactions on Circuits and Systems—II: Express Briefs Information for authors

    Publication Year: 2005, Page(s): c4
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Aims & Scope

Part I will now contain regular papers focusing on all matters related to fundamental theory, applications, analog and digital signal processing. Part II will report on the latest significant results across all of these topic areas.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief

Chi K. Michael Tse
Dept. of Electronic and Information Engineering
Hong Kong Polytechnic University
Hunghom, Hong Kong
cktse@ieee.org