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IEEE Transactions on Circuits and Systems II: Express Briefs

Issue 2 • Feb. 2005

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Displaying Results 1 - 17 of 17
  • 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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  • A 2-nW 1.1-V self-biased current reference in CMOS technology

    Publication Year: 2005, Page(s):61 - 65
    Cited by:  Papers (74)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB) | HTML iconHTML

    This work presents the design of an ultra-low-power self-biased 400-pA current source. We propose the use of a very simple topology along with a design methodology based on the concept of inversion level. An efficient design methodology has resulted in a cell area around 0.045 mm2 in the AMI 1.5-μm CMOS technology and power consumption around 2 nW for 1.2-V supply. Simulated and expe... View full abstract»

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  • The design of digital all-pass filters using second-order cone programming (SOCP)

    Publication Year: 2005, Page(s):66 - 70
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    This brief proposes a new method for designing digital all-pass filters with a minimax design criterion using second-order cone programming (SOCP). Unlike other all-pass filter design methods, additional linear constraints can be readily incorporated. The overall design problem can be solved through a series of linear programming subproblems and the bisection search algorithm. The convergence of t... View full abstract»

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  • A 1.8-μW sigma-delta modulator for 8-bit digitization of cardiac signals in implantable pacemakers operating down to 1.8 V

    Publication Year: 2005, Page(s):71 - 76
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    Implantable biomedical devices can highly benefit from submicrometer CMOS technologies both in terms of duration-time increase and size shrinking. This work shows how design techniques for submicrometer CMOS technologies lead to improvements in the sensing stage of a cardiac implantable pacemaker. A sigma-delta modulator is presented for 8-bit quantization of the natural electrical activity of the... View full abstract»

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  • Optimal controller of a buck DC-DC converter using the uncertain load as stochastic noise

    Publication Year: 2005, Page(s):77 - 81
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB) | HTML iconHTML

    This work presents an optimal design approach for the pulsewidth modulation switching control of a buck DC-DC converter by modeling the converter as a stochastic linear system with noise of uncertain load. Firstly, we temporarily assume that the stochastic system is available with complete state, and then derive an optimal state feedback control for the optimal noise regulation in steady state. Se... View full abstract»

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  • A compact tunable CMOS transconductor with high linearity

    Publication Year: 2005, Page(s):82 - 84
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB) | HTML iconHTML

    A novel CMOS linear transconductor is presented. The use of simple and accurate voltage buffers to drive two MOS transistors operating in the triode region leads to a highly linear voltage-to-current conversion. Transconductance gain can be continuously and precisely adjusted using dc level shifters. Measurement results of a balanced transconductor fabricated in a 0.5-μm CMOS technology show a ... View full abstract»

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  • Design of a fully-pipelined systolic array for flexible transposition-free VLSI of 2-D DFT

    Publication Year: 2005, Page(s):85 - 89
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    A novel approach to design an efficient systolic structure to implement the two-dimensional discrete Fourier transform (DFT) is presented. The proposed systolic structure consists of (N×N) simple locally connected processing elements that perform two complex multiplications and two additions during a cycle period. It does not involve any transposition operation and, therefore, the correspond... View full abstract»

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  • Interconnection of state space structures and wave digital filters

    Publication Year: 2005, Page(s):90 - 93
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB) | HTML iconHTML

    State space structures (SSSs) and wave digital filters (WDFs) are two major paradigms for the realization of digital filters. Both approaches are well established, but there are no proven methods for a mixed design of digital filters consisting of parts which are realized as SSSs and parts realized as WDFs. This contribution shows how to add a wave port to the conventional SS representation. This ... View full abstract»

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  • Robust stability and stabilizability of uncertain linear hybrid systems with state delays

    Publication Year: 2005, Page(s):94 - 98
    Cited by:  Papers (42)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB) | HTML iconHTML

    In this brief, we consider a class of uncertain linear discrete-time switched systems with state delays. By solving certain matrix and Riccati-like inequalities, sufficient conditions for the robust stability and stabilizability of the system are given. View full abstract»

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  • The bond between causal complex cepstra and Sheffer polynomials

    Publication Year: 2005, Page(s):99 - 101
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB) | HTML iconHTML

    A strong bond is established between causal complex cepstra and Sheffer polynomials. This bond results in the generation of parametric classes of discrete-time signals and their associated complex cepstra. These signals generally have more advanced singularities than the poles of signals with rational z-transforms. Examples are presented which illustrate the behavior of signals having branch point... View full abstract»

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  • Monolithic large-signal transimpedance amplifier for use in multi-gigabit, short-range optoelectronic interconnect applications

    Publication Year: 2005, Page(s):102 - 106
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB) | HTML iconHTML

    A novel large-signal transimpedance amplifier front-end, intended for monolithic integration with a Si p-i-n diode and employing HBT-CMOS technology for use in short-range optoelectronic interconnects is proposed. Simulated bandwidth and gain are >4 Gbits/s and 43 dBΩ, respectively, while driving a 100-fF load to TTL voltage levels. View full abstract»

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  • Performance analysis of general charge sampling

    Publication Year: 2005, Page(s):107 - 111
    Cited by:  Papers (17)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB) | HTML iconHTML

    This brief focuses on the performance analysis of general charge-sampling circuits for signal capture. The theoretical analysis in the brief can be applied not only for weak signal capture, but also for the normal signal sampling. Based on a general charge-sampling model, the transfer function, the noise performance, and the clock jitter tolerance are analyzed and compared to conventional voltage ... View full abstract»

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  • Analytical design method for optimal equiripple comb FIR filters

    Publication Year: 2005, Page(s):112 - 115
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    A novel analytical design method for highly selective digital optimal equiripple comb finite-impulse response (FIR) filters is presented. The equiripple comb FIR filters are optimal in the Chebyshev sense. The number of notch bands, the width of the notch bands and the attenuation in the passbands can be independently specified. The degree formula and the differential equation for the generating p... View full abstract»

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  • The Fourth International Workshop on Multidimensional (nD) Systems NDS 2005

    Publication Year: 2005, Page(s): 116
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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