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IEEE Transactions on Circuits and Systems II: Express Briefs

Issue 3 • Date March 2006

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Displaying Results 1 - 24 of 24
  • Table of contents

    Publication Year: 2006, Page(s): c1
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  • IEEE Transactions on Circuits and Systems—II: Express Briefs publication information

    Publication Year: 2006, Page(s): c2
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  • A new modeling and optimization of gain-boosted cascode amplifier for high-speed and low-voltage applications

    Publication Year: 2006, Page(s):169 - 173
    Cited by:  Papers (33)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB) | HTML iconHTML

    Because of limited output swing, the basic structure of a gain-boosted cascode amplifier (GBCA) cannot be used to design a low-voltage operational amplifier. In this paper, we investigate the design of a high-swing GBCA, and find the optimum bandwidth for the boosting or feedback amplifier. This bandwidth eliminates the slow-settling component in the step response, prevents the gain-boosting loop ... View full abstract»

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  • Fast 2-dimensional 4 × 4 forward integer transform implementation for H.264/AVC

    Publication Year: 2006, Page(s):174 - 177
    Cited by:  Papers (37)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    In this paper, the novel two-dimensional (2-D) fast algorithm for realization of 4 × 4 forward integer transform in H.264 is proposed. Based on matrix operations with Kronecker product and direct sum, the efficient fast 2-D 4 × 4 forward integer transform can be derived from the proposed one-dimensional fast 4 × 4 forward integer transform through matrix decompositions. The propo... View full abstract»

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  • New configurations for the measurement of small resistance changes

    Publication Year: 2006, Page(s):178 - 182
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB) | HTML iconHTML

    In this brief, three circuits for the measurement of small resistance changes are proposed. The circuits offer the advantages of reduced bridge complexity and produce an output signal that is twice that of a proposed current-mode bridge and four times that of the conventional Wheatstone bridge. Also, the circuits have no common mode input signal and can accommodate multiple sensors without additio... View full abstract»

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  • Phase diffusion due to low-frequency colored noise

    Publication Year: 2006, Page(s):183 - 186
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB) | HTML iconHTML

    Phase diffusion in a two-dimensional nonlinear oscillator subject to colored noise is simulated numerically, and compared to theoretical predictions. When the spectrum of the noise sources decays faster than ω-2 at high frequencies, standard first-order perturbation results are dominated by second-order effects. A simple analytical model predicts the general form of the diffusion ... View full abstract»

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  • Can threshold networks be trained directly?

    Publication Year: 2006, Page(s):187 - 191
    Cited by:  Papers (105)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB) | HTML iconHTML

    Neural networks with threshold activation functions are highly desirable because of the ease of hardware implementation. However, the popular gradient-based learning algorithms cannot be directly used to train these networks as the threshold functions are nondifferentiable. Methods available in the literature mainly focus on approximating the threshold activation functions by using sigmoid functio... View full abstract»

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  • Charge-domain FIR sampler with programmable filtering coefficients

    Publication Year: 2006, Page(s):192 - 196
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    A charge-domain sampling technique for realization of mixed-mode finite-impulse response (FIR) filters is presented. The method is based on weighting signal current samples integrated into a sampling capacitor with a set of parallel digitally controlled current-mode switches each carrying a unit current element. The fine achievable resolution and digital controllability of the filter tap coefficie... View full abstract»

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  • A mixed-signal GFSK demodulator for Bluetooth

    Publication Year: 2006, Page(s):197 - 201
    Cited by:  Papers (16)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB) | HTML iconHTML

    A discrete-time mixed-signal Gaussian frequency-shift keying demodulator designed for a low intermediate frequency Bluetooth receiver performs FSK demodulation. Employing passive sampling and time-domain differentiation techniques, the demodulator performs quadrature demodulation while tolerating up to 200-kHz frequency offset. A distributed array of interleaved sampling circuits and a low-voltage... View full abstract»

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  • Invariance principle and complete stability for cellular neural networks

    Publication Year: 2006, Page(s):202 - 206
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    In applications of classification of patterns, image processing, associative memories etc, the complete stability of cellular neural networks (CNNs) plays an important role. Invariance principles based on the Lyapunov functions and functionals are still the most advantageous theory to analyze the complete stability. However, one difficulty in applying classical invariance principles to the complet... View full abstract»

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  • Performance advantages of 3-D digital integrated circuits in a mixed SOI and bulk CMOS design space

    Publication Year: 2006, Page(s):207 - 211
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    Three-dimensional (3-D) integrated circuits (ICs), with multiple stacked device layers, offer a unique design opportunity to use both bulk and partially depleted (PD) silicon-on-insulator (SOI) CMOS devices in a single circuit design. Such 3-D designs can, for example, minimize the body effect common in bulk designs and reduce adverse floating-body effects (FBE) common in PD SOI designs. Sequentia... View full abstract»

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  • Analysis and design of a low-voltage RF CMOS mixer

    Publication Year: 2006, Page(s):212 - 216
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB) | HTML iconHTML

    A CMOS low-voltage downconversion mixer is presented. With 1.69-GHz local oscillator signal input and 1.63-GHz RF signal input, measurement results show that the conversion gain is 6.631 dB, input-referred third-order intercept point is 1.51 dBm, single-sideband noise figure is 21.43 dB with a 1.8-V supply voltage. The mixer's noise and linearity analysis, layout technique to maximize RF performan... View full abstract»

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  • Impulse response of sincN FIR filters

    Publication Year: 2006, Page(s):217 - 219
    Cited by:  Papers (22)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB) | HTML iconHTML

    A simple recurrence formula is presented for computing the impulse response coefficients of the sincN FIR filter, consisting of a cascade of N sinc filters, each of length M. A closed form expression is also given for the first M coefficients. View full abstract»

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  • 1.3 V 20 ps time-to-digital converter for frequency synthesis in 90-nm CMOS

    Publication Year: 2006, Page(s):220 - 224
    Cited by:  Papers (169)  |  Patents (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB) | HTML iconHTML

    We propose and demonstrate a 20-ps time-to-digital converter (TDC) realized in 90-nm digital CMOS. It is used as a phase/frequency detector and charge pump replacement in an all-digital phase-locked loop for a fully-compliant Global System for Mobile Communications (GSM) transceiver. The TDC core is based on a pseudodifferential digital architecture that makes it insensitive to nMOS and pMOS trans... View full abstract»

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  • LMS-based calibration of an RF digitally controlled oscillator for mobile phones

    Publication Year: 2006, Page(s):225 - 229
    Cited by:  Papers (30)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB) | HTML iconHTML

    We propose a least-mean square based gain calibration technique of an RF digitally controlled oscillator (DCO) in an all-digital phase-locked loop (ADPLL). The DCO gain of about 12-kHz/least significant bit is subject to process, voltage and temperature variations, but is tracked and compensated in real time. Precise setting of the inverse DCO gain in the ADPLL modulating path allows direct wide-b... View full abstract»

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  • A new LMI condition for delay-dependent asymptotic stability of delayed Hopfield neural networks

    Publication Year: 2006, Page(s):230 - 234
    Cited by:  Papers (123)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB) | HTML iconHTML

    In this paper, a new delay-dependent asymptotic stability condition for delayed Hopfield neural networks is given in terms of a linear matrix inequality, which is less conservative than existing ones in the literature. This condition guarantees the existence of a unique equilibrium point and its global asymptotic stability of a given delayed Hopfield neural network. Examples are provided to show t... View full abstract»

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  • Robust H2 filtering for a class of systems with stochastic nonlinearities

    Publication Year: 2006, Page(s):235 - 239
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    This paper addresses the robust H2 filtering problem for a class of uncertain discrete-time nonlinear stochastic systems. The nonlinearities described by statistical means in this paper comprise some well-studied classes of nonlinearities in the literature. A technique is developed to tackle the matrix trace terms resulting from the nonlinearities, and the well-known S-procedure techniq... View full abstract»

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  • HBP: improvement in BP algorithm for an adaptive MLP decision feedback equalizer

    Publication Year: 2006, Page(s):240 - 244
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB) | HTML iconHTML

    Though the decision feedback equalizer (DFE) with multilayer perceptron (MLP) structure can be trained effectively by the backpropagation (BP) algorithm, it is always accompanied by the problem of local minimum. In order to solve some problems of the local minimum in the BP algorithm and to improve the performance of the BP algorithm under the same MLP structure, we combine the hierarchical approa... View full abstract»

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  • Special issue on smart sensors

    Publication Year: 2006, Page(s): 245
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  • 2006 IEEE International Conference on Multimedia and Expo (ICME)

    Publication Year: 2006, Page(s): 246
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  • 2006 IEEE International Symposium on Circuits and Systems (ISCAS 2006)

    Publication Year: 2006, Page(s): 247
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  • 49th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS 2006)

    Publication Year: 2006, Page(s): 248
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  • IEEE Circuits and Systems Society Information

    Publication Year: 2006, Page(s): c3
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  • IEEE Transactions on Circuits and Systems—II: Express Briefs Information for authors

    Publication Year: 2006, 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