Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on

30 May-2 June 1999

Go

Filter Results

Displaying Results 1 - 25 of 129
  • IEEE International Symposium on Circuits and Systems [front matter]

    Publication Year: 1999, Page(s):0_1 - liv
    Request permission for reuse | PDF file iconPDF (7613 KB)
    Freely Available from IEEE
  • Analysis of the periodic steady-state in nonlinear circuits using an adaptive function base

    Publication Year: 1999, Page(s):1 - 4 vol.6
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (302 KB)

    In this paper, we introduce a method for the analysis of the periodic steady-state in nonlinear circuits, performing well even in cases, where the harmonic balance (HE) is unsuited. A series expansion of the state variables with a self-adaptive function base is essential. This results in approximations with few parameters and therefore in a small computational effort. Examples validate the method ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Symbolic analysis of large signals in nonlinear systems

    Publication Year: 1999, Page(s):5 - 8 vol.6
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (322 KB)

    A method is proposed to obtain symbolic expressions for the large signal behavior in nonlinear circuits. The expressions are described in terms of a nonlinear operator. The method is valid when nonlinear component behavior is piecewise linear approximated. The method is a large extension of the technique as proposed by Fernandez (1998). View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multiresolution analysis of time-variant electrical networks

    Publication Year: 1999, Page(s):9 - 13 vol.6
    Cited by:  Papers (6)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    This paper presents a new approach for the analysis and the resolution of linear time-variant circuits, based on the Haar set of orthogonal wavelet functions. Simple recursive algorithm for the construction of the integral and convolution Haar matrix, associated to these operators in the Haar domain, are proposed. Integration with multiresolution analysis approach yields a quickly converging solut... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Steady states prediction in nonlinear circuit by wavelet transform

    Publication Year: 1999, Page(s):14 - 17 vol.6
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (266 KB)

    This paper presents a method to predict steady state oscillations from transient waveforms in a circuit. As a tool, we use Haar wavelet. We predict if the periodic oscillation is sustained or not from the transient state. We apply the method to 1/3-subharmonic oscillation in a nonlinear RLC series resonance circuit and show the possibility of steady states prediction. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A model for predicting sampler RF bandwidth and conversion loss

    Publication Year: 1999, Page(s):18 - 21 vol.6
    Cited by:  Papers (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    A simple model for predicting the RF bandwidth and conversion loss of a sampler from a given sampling switch conductance function is presented. The model is valid for any conductance function and for any relation between sampling pulse width and sampler time constant. As an example, the model is here applied to the case with a linearly rising/falling sampling switch conductance function and differ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new diode model formulation for electro-thermal analysis

    Publication Year: 1999, Page(s):22 - 25 vol.6
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Thermal effects due to the self heating of semiconductor devices is efficiently included in electrical simulators adding an equivalent RC network that models the thermal phenomenon. In this paper we consider the numerical problems that arise in the electro-thermal simulation of circuits containing strongly heating diodes. To circumvent these problems, we propose a new formulation of the diode equa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The sampling of noise for random number generation

    Publication Year: 1999, Page(s):26 - 29 vol.6
    Cited by:  Papers (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    A popular method for generating truly random numbers based on a natural phenomenon is the electronic amplification and sampling of a thermal or shot noise signal. As ail electronic systems are influenced by finite bandwidth, 1/f noise and other non-random influences, perfect randomness cannot be preserved by any practical system. This paper develops a method to quantify the impact of common circui... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New microwave bandstop filter using lumped and transversal network

    Publication Year: 1999, Page(s):30 - 32 vol.6
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    A new approach for microwave bandstop filters design using the conventional lumped and transversal filtering network is presented. The applicability of the proposed design method is demonstrated with an experimental circuit of a 1.1 GHz bandstop filter of 2.5% bandwidth with a 55 dB notch rejection. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Expanded GMC for transient analysis of transmission line networks

    Publication Year: 1999, Page(s):33 - 36 vol.6
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (354 KB)

    This paper describes the expanded generalized method of characteristics (GMC) in order to handle large linear interconnect networks. The conventional GMC is applied to model each of transmission lines. Therefore, this method is not suitable for dealing with large linear networks containing many transmission lines. Here, we propose the expanded GMC method to overcome this problem. This method compu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of phase equalizers via symmetry of the impulse response

    Publication Year: 1999, Page(s):37 - 40 vol.6
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    This paper proposes a new approach for designing analog phase equalizers based on the symmetry of the impulse response, which is a meaningful measure of phase linearity. Phase equalization techniques based on group delay or phase delay are usually performed on a limited band, whose time response may not be adequate for the transmission of pulsed signals. The proposed technique is inherently a wide... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Logarithmic sampling of gain and phase approximation

    Publication Year: 1999, Page(s):41 - 44 vol.6
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (357 KB)

    We establish new relationships for approximating the phase values from the gain samples, in nepers, equally spaced in the logarithmic frequency domain. First a general approximation formula is proved, then two quadrature formulae are derived using Newton-Cotes and Simpson rules. Finally, the numerical examples are shown. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptive feed-forward linear power amplifier (LPA) for the IMT-2000 frequency band

    Publication Year: 1999, Page(s):45 - 48 vol.6
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    A modern digital communication system requires high linearity for the transfer characteristic during the amplification process. Especially, a noise-limited system like wide-band CDMA system for IMT-2000 requires low intermodulation distortion (IMD) products. We propose the optimal control method of an adaptive feed-forward linear power amplifier (LPA). It guarantees the stability and performance b... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A modified inverse-Chebyshev filter with an all positive elements ladder passive realization

    Publication Year: 1999, Page(s):49 - 52 vol.6
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    This paper presents a technique to obtain a realization for passive ladder networks of the inverse-Chebyshev lowpass filter with all positive elements. The technique consists in the shifting of transmission zeros to infinity by means of a transformation in the complex frequency s-plane. The technique allows for multiple frequency shifts until the desired realization is obtained. Results show that ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Passive device modeling methodology using nonlinear optimization

    Publication Year: 1999, Page(s):53 - 56 vol.6
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (401 KB)

    In this paper we describe a method of accurately modeling new passive devices by deembedding the many building blocks from which they are built from just a few test structures. We use a nonlinear optimizer to find the optimal models for the building blocks by fitting extensive high frequency measurements of the test structures behavior. Key results are: the number of test structures needed is much... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multilevel PWM for single-phase power factor pre-regulator

    Publication Year: 1999, Page(s):57 - 60 vol.6
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (383 KB)

    A new single-phase bridge rectifier with three-level pulse width modulation (PWM) is proposed. A power factor corrector to improve the power quality is presented. The hysteresis current control (HCC) technique for a bridge rectifier with two AC power switches is adopted. The control schemes stored in programmable array logic (PAL) are implemented such that the line current is driven to follow the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of noise in higher-order translinear filters

    Publication Year: 1999, Page(s):61 - 64 vol.6
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Noise analysis of higher-order translinear filters cannot be established through straight-forward extension of analysis techniques for first-order TL filters, due to the presence noise sources that interact with multiple filter states simultaneously, in a nonlinear and non-stationary way. Such noise sources, that are not encountered in in first-order TL filters, require a new analysis technique. T... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Signal analysis of externally linear filters

    Publication Year: 1999, Page(s):65 - 68 vol.6
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (338 KB)

    The circuit equations of an externally linear filter realization are nonlinear state-space equations. In this paper, a method to test if a nonlinear system is externally linear and to calculate its transfer function is proposed. The method transforms the nonlinear system to an externally equivalent linear system (described by linear state-space equations), which can be solved to obtain the transfe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The linear time-varying approach applied to a first-order dynamic translinear filter

    Publication Year: 1999, Page(s):69 - 72 vol.6
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (406 KB)

    Dynamic translinear (DTL) circuits use the exponential input-output relation of the transistor as a primitive for the synthesis of electronic circuits. As a consequence the analysis of the dynamic behaviour of this type of circuit in the presence of parasitics results in analyzing dynamic nonlinear circuits. There are three different approaches that can be applied: the linear time-invariant (LTI) ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Theoretical bases of convolution technique in gradient estimation of average quality index of electronic circuits

    Publication Year: 1999, Page(s):73 - 76 vol.6
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    A theoretical study of the convolution technique in Average Quality Index (AQI) gradient estimation of electronic circuits is presented. In this study, we use the novel theory of circuit class, which allows evaluating the performance of convolution technique over a large number of realistic circuits. The advantages of the convolution technique in nondifferentiable density function of circuit param... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High power factor of metal halide lamp with dimming control

    Publication Year: 1999, Page(s):77 - 80 vol.6
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (427 KB)

    A high-power-factor high-efficiency electronic ballast for high intensity discharge lamp (HID) applications is presented in this paper. The electronic ballast consists of a boost type power factor corrected rectifier, a full bridge inverter, and a resonant tank. The power factor pre-regulator produces sinusoidal input current in phase with mains voltage. The phase-shift PWM scheme for full bridge ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A heuristic algorithm SDS for scheduling with timed Petri nets

    Publication Year: 1999, Page(s):81 - 84 vol.6
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (410 KB)

    The paper proposes a new heuristic algorithm SDS for the scheduling problem with timed Petri nets: Given a timed Petri net (a Petri net in which delay is associated with transition firing), an initial marking M and a firing count vector X, find a firing sequence (a sequence of transitions) which is legal on M with respect to X and which optimizes a given objective function. Such a sequence is call... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Transimpedance amplifiers for optical fiber systems based on common-base transistors

    Publication Year: 1999, Page(s):85 - 88 vol.6
    Cited by:  Papers (8)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (297 KB)

    In this paper, the performances of common-emitter and common-base transimpedance amplifiers are compared. Frequency response, noise level, power consumption, and silicon area are the main parameters studied. It is shown that transimpedance preamplifiers based on common-base transistors present less peaking effects because the poles of the transimpedance gain are real in most practical cases. The n... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Supply noise insensitive bandgap regulator using capacitive charge pump DC-DC converter

    Publication Year: 1999, Page(s):89 - 92 vol.6
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    This paper presents a supply noise insensitive bandgap regulator using a capacitive charge pump DC-DC converter (BRCC) with -50 dB power supply noise rejection (PSNR) in a 0.35 /spl mu/m CMOS process. This proposed BRCC promises to reduce temperature sensitivities and suppress low/high frequency power supply noise using stacked cascoded N-type output transistors. In particular, since the operation... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • VLSI concentric partitioning using interior point quadratic programming

    Publication Year: 1999, Page(s):93 - 96 vol.6
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (362 KB)

    This paper presents a novel approach for solving the standard cell placement problem. A relaxed quadratic formulation of the problem is solved iteratively incorporating techniques to increase the spreading of cells, including introducing attractors and dynamic first moment constraints. At each iteration, a percentage of the cells that are close to the boundary of the chip are fixed. This procedure... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.