Proceedings of the 43rd IEEE Midwest Symposium on Circuits and Systems (Cat.No.CH37144)

8-11 Aug. 2000

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  • Proceedings of the 43rd IEEE Midwest Symposium on Circuits and Systems [front matter]

    Publication Year: 2000, Page(s):i - xlix
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    Freely Available from IEEE
  • Topical index

    Publication Year: 2000, Page(s): A
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    Freely Available from IEEE
  • Author index

    Publication Year: 2000, Page(s):B - H
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  • Optimal symmetry detection for OKFDDs

    Publication Year: 2000, Page(s):1422 - 1425 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Ordered Kronecker functional decision diagrams (OKFDD) are an extension of the popular ordered binary decision diagrams (OBDD) and as such provide a more compact representation of Boolean functions than OBDDs. Symmetric functions are useful in logic synthesis. In this paper, we present an optimal algorithm for detecting symmetric functions represented in OKFDDs View full abstract»

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  • Maximizing the oscillation frequency of CMOS VCOs

    Publication Year: 2000, Page(s):1248 - 1251 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Techniques for enhancing the operation frequency range for voltage controlled ring oscillators are discussed. It is shown that substantial improvement in speed is achievable with concentric layout techniques and with transconductance density optimization. Simulation results for a VCO designed in a 0.35 μm CMOS process are presented which show a center frequency of 4.5 GHz and a tuning range of ... View full abstract»

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  • A weighted reduced connectivity matrix partitioning algorithm [VLSI design]

    Publication Year: 2000, Page(s):1136 - 1139 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    M-way partitioning algorithms have many important applications in VLSI design. A heuristic Reduced Connectivity Matrix Partitioning (RCMP) algorithm can handle m-way partitioning with good time and space complexity. In this paper, we introduce a weighted RCMP (WRCMP) algorithm, which incorporates area constraints with performance objectives at the same time in order to extend the capability of RCM... View full abstract»

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  • DSP solution for wall-climber micro-robot control using TMS320LF2407 chip

    Publication Year: 2000, Page(s):1348 - 1351 vol.3
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    This paper describes the controller design for a wall-climber micro-robot using a DSP chip. Because of its high-speed performance, its support for multi-motor control and its low power consumption, the TMS320LF2407 DSP from Texas Instruments (TI) demonstrates itself as an ideal candidate of the single chip controller for the wall-climber micro-robot View full abstract»

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  • Constraints implementation for IQML and MODE direction-of-arrival estimators

    Publication Year: 2000, Page(s):1418 - 1421 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    The iterative quadratic maximum likelihood IQML and the method of direction estimation MODE are well known "high resolution" direction-of-arrival DOA estimation methods. Their solutions lead to an optimization problem with constraints. The usual linear constraint presents a poor performance for certain DOA values. This work proposes a new linear constraint applicable to both DOA methods and compar... View full abstract»

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  • Gain-controlled resistors in analysis of amplifiers featuring accurate input and output impedance

    Publication Year: 2000, Page(s):1232 - 1235 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    An amplifier featuring accurate input and output impedance can be considered as a device that includes two models of gain controlled resistors. The models are introduced, and it is shown how they can be used in the analysis and design of such an amplifier. Then the analysis is applied to two-transistor amplifiers used in practice, and a new configuration is added. The relationship that should exis... View full abstract»

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  • A software radio architecture for CDMA IS-95-based dual mode mobile terminals

    Publication Year: 2000, Page(s):1286 - 1287 vol.3
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    This paper focuses on integrating Rate-Set I and Rate-Set II speech encoders onto the same mobile terminal, using a software-defined radio architecture (SDR). Performance of the proposed architecture is evaluated. The proposed architecture optimizes system capacity versus received quality of service (QoS) View full abstract»

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  • A new method of parameter estimation of oceanographic coastal zone by electromagnetic measurements

    Publication Year: 2000, Page(s):1434 - 1437 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    A new method is proposed to estimate the parameters of sea wave structure in a coastal zone. This method is based upon innovative modeling of diffused electromagnetic reflections from coastal waves and Doppler measurements. Design analysis of a radar sensor, which synergistically integrates both types of measurements, is presented. View full abstract»

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  • A non-zero delay model for glitch analysis in logic circuits

    Publication Year: 2000, Page(s):1244 - 1247 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    One of the major factors which contribute to the power consumption in CMOS combinational logic circuits is the switching activities in the circuits. Many of such switching activities are due to spurious pulses, called glitches. Recently, a new model of glitch analysis, called G-vector has been proposed. The power of the model is that, unlike the existing ones which model only the propagation of gl... View full abstract»

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  • CMOS RF low-noise amplifier design for wireless communication

    Publication Year: 2000, Page(s):1306 - 1309 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    Design and optimization of a CMOS low-noise amplifier have been presented. Typical noise parameters such as minimum noise figure,, equivalent noise resistance, and optimum source conductance using deep submicron CMOS technology including effect of bias-dependent gate resistance of the MOSFET are derived. Noise parameters, gain, and power consumption are simultaneously optimized using closed-form a... View full abstract»

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  • Fast and accurate simulation of tree structured interconnect

    Publication Year: 2000, Page(s):1130 - 1134 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    A method is introduced to evaluate time domain signals within RLC trees with arbitrary accuracy in response to any input signal. This method depends on finding a low frequency reduced order transfer function by direct truncation of the exact transfer function at different nodes of an RLC tree. The method is numerically accurate for any order of approximation, which permits approximations to be det... View full abstract»

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  • Neural network-based geometric references recognition applied to ultrasound echo signals

    Publication Year: 2000, Page(s):1344 - 1347 vol.3
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    Ultrasonic sensing systems are often used in robotics for navigation purposes, such as obstacle avoidance and distance measurements. However, a very desirable but difficult task is the detection and recognition of geometric references. This is a tough task due to the significant interference caused to the ultrasonic sensing system by the environment, such as temperature variations and air convecti... View full abstract»

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  • Transient IR voltage drops in CMOS-based power distribution networks

    Publication Year: 2000, Page(s):1396 - 1399 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Decreased power supply levels have reduced the tolerance to voltage changes within power distribution networks in CMOS integrated circuits. High on-chip currents, required to charge and discharge large on-chip loads while operating at high frequencies, produce significant transient IR voltage drops within a power distribution network. Analytical expressions characterizing these transient IR voltag... View full abstract»

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  • Current mode standard lattice filter for use in complex ear-type networks

    Publication Year: 2000, Page(s):1086 - 1089 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    An inner ear degree-two cochlea section, which encompasses complex transmission zeros, is realized completely in hardware. In doing this, standard complex two port filters are extracted to a real four port network. A new digital switched current circuit is used with improved clock feed through delay portions. A complex lattice portion is simulated in both Spice and Matlab with accurate results View full abstract»

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  • Flat CORDIC: a unified architecture for high-speed generation of trigonometric and hyperbolic functions

    Publication Year: 2000, Page(s):1414 - 1417 vol.3
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    Advances in VLSI technology provided the impetus for porting algorithms into architectures. The CORDIC algorithm reigned supreme in this regard due to its canny ability to decimate trigonometric and hyperbolic functions with simple shift and add operations. Despite further refinements of the algorithm with the introduction of redundant arithmetic and higher radix CORDIC techniques, in terms of cir... View full abstract»

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  • Finding phase margin of feedback systems from closed loop AC simulations

    Publication Year: 2000, Page(s):1228 - 1231 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The stability of a feedback system is generally characterized with a point variable, the system phase margin. Phase Margin is a function of the system loop gain and is not always well defined. In this paper we show how to obtain the phase margin from the closed loop system response by translating the phase of this function with a simple algebraic relation. As the method utilizes a closed loop resu... View full abstract»

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  • Limitations of criteria for testing transistor circuits for multiple DC operating points

    Publication Year: 2000, Page(s):1156 - 1159 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Addresses the problem of determining whether a transistor circuit possesses multiple DC operating points. We investigate how the sign change of the determinant corresponding to the Jacobian matrix associated with circuit equations can be used to indicate the-number of DC operating points in a transistor circuits. We give circuit examples that illustrate that these criteria may not be reliable, and... View full abstract»

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  • Representation of speech signals by single signature base function within optimum frame length

    Publication Year: 2000, Page(s):1282 - 1285 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    Before this study, we proposed a novel method to represent signals in terms of, so called, "Signature Base Functions - SBF" which were extracted from the physical features of the waveform under consideration. SBF were determined in ad-hoc manner, which requires tedious search process, and they were not orthogonal. Furthermore, the optimality of SBF was in question. In this work however, we suggest... View full abstract»

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  • Intelligent Star Tracker

    Publication Year: 2000, Page(s):1430 - 1433 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    Describes the Intelligent Star Tracker System. The Intelligent Star Tracker System incorporates an adaptive optic catadioptric telescope in a silicon carbide housing. Leveraging off of the active optic technologies, the novel active pixel position sensors (APPS) enable wide dynamic range and allow simultaneous imagery of faint and bright stars in a single image. Moreover, the APPS, in conjunction ... View full abstract»

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  • Current compensation method for adjustment free stereo multiplex voltage control oscillator in FM receivers

    Publication Year: 2000, Page(s):1256 - 1259 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    An alternative solution of an adjustment free stereo multiplex (MPX) voltage control oscillator (VCO) circuit is proposed. The design approach taken was the utilization of a compensation circuit to change the VCO charging/discharging current, and hence, the natural frequency (fn). Manual adjustment of the external resonator was passed over which translated to a reduction in labor and ti... View full abstract»

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  • Microwave circuit parameters classification according to their influence on circuit performance

    Publication Year: 2000, Page(s):1240 - 1243 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    This paper shows how by means of a complete sensitivity analysis restricted to order six, it is possible to perform a classification of all circuit parameters according to their influence on the circuit response and also to detect correlation, that may exist between various parameters View full abstract»

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  • Truncation DC-error elimination in FIR filters

    Publication Year: 2000, Page(s):1292 - 1295 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    The truncation of binary numbers can be modeled as noise and a DC-error if certain conditions are fulfilled. These truncation effects in finite impulse response (FIR) digital filters that are realized with canonic signed-digit (CSD) representation are reviewed. Three different techniques to reduce or eliminate the DC-error are presented and compared with respect to hardware and power consumption r... View full abstract»

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