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Circuits and Systems I: Regular Papers, IEEE Transactions on

Issue 7 • Date July 2007

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Displaying Results 1 - 25 of 25
  • Table of contents

    Publication Year: 2007 , Page(s): C1 - C4
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  • IEEE Transactions on Circuits and Systems—I: Regular Papers publication information

    Publication Year: 2007 , Page(s): C2
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  • Three-Dimensional Fully Symmetric Inductors, Transformer, and Balun in CMOS Technology

    Publication Year: 2007 , Page(s): 1413 - 1423
    Cited by:  Papers (14)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1359 KB) |  | HTML iconHTML  

    This paper presents novel three-dimensional (3-D) symmetric passive components, including inductors, transformers, and balun. Layout areas of these components are drastically reduced by 32% to 70%, while the symmetry of the input and the output ports is still maintained. The inductance mismatch in the 3-D transformer is less than 0.1%, and the coupling coefficient can be up to 0.77. The 3-D balun ... View full abstract»

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  • A 1-V CMOS Current Reference With Temperature and Process Compensation

    Publication Year: 2007 , Page(s): 1424 - 1429
    Cited by:  Papers (32)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (920 KB) |  | HTML iconHTML  

    A 1-V current reference fabricated in a standard CMOS process is described. Temperature compensation is achieved from a bandgap reference core using a transimpedance amplifier in order to generate an intermediate voltage reference, VREF. This voltage applied to the gate of a carefully sized nMOS output transistor provides a reference drain current, IREF , nearly independent o... View full abstract»

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  • Analytical Synthesis of Low-Sensitivity High-Order Voltage-Mode DDCC and FDCCII-Grounded R and C All-Pass Filter Structures

    Publication Year: 2007 , Page(s): 1430 - 1443
    Cited by:  Papers (6)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2261 KB) |  | HTML iconHTML  

    The difficulty of realizing the operations of addition and subtraction of a voltage-mode signal renders two special active elements, namely, differential difference current conveyors (DDCCs) and fully differential current conveyors (FDCCIIs), both of which have the ability to perform the operations of addition and subtraction, to become very important for voltage-mode analog filter design. Note th... View full abstract»

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  • A Spatial Contrast Retina With On-Chip Calibration for Neuromorphic Spike-Based AER Vision Systems

    Publication Year: 2007 , Page(s): 1444 - 1458
    Cited by:  Papers (51)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3786 KB) |  | HTML iconHTML  

    We present a 32 times 32 pixels contrast retina microchip that provides its output as an address event representation (AER) stream. Spatial contrast is computed as the ratio between pixel photocurrent and a local average between neighboring pixels obtained with a diffuser network. This current-based computation produces an important amount of mismatch between neighboring pixels, because the curren... View full abstract»

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  • Advances in Reversed Nested Miller Compensation

    Publication Year: 2007 , Page(s): 1459 - 1470
    Cited by:  Papers (30)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2350 KB) |  | HTML iconHTML  

    The use of two frequency compensation schemes for three-stage operational transconductance amplifiers, namely the reversed nested Miller compensation with nulling resistor (RN-MCNR) and reversed active feedback frequency compensation (RAFFC), is presented in this paper. The techniques are based on the basic RNMC and show an inherent advantage over traditional compensation strategies, especially fo... View full abstract»

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  • Noise and Group Delay in Active Filters

    Publication Year: 2007 , Page(s): 1471 - 1480
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (333 KB) |  | HTML iconHTML  

    The output noise spectrum and the group delay of active filters are related. For any state-space realization of any transfer function without finite transmission zeros, there is a combination of noise transfer functions that is equal to the group delay. For any transfer function without transmission zeros, it is possible to generate a filter for which the output noise spectrum is an exact multiple... View full abstract»

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  • Efficient Design Centering of High-Frequency Integrated Continuous-Time Filters

    Publication Year: 2007 , Page(s): 1481 - 1488
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1197 KB) |  | HTML iconHTML  

    We apply ldquospace-mappingrdquo optimization for design centering high-frequency integrated continuous-time filters. By appropriately choosing the coarse model, a significant simplification of the space mapping technique is possible, since the coarse model design space is almost a translated version of the fine model design space. Graphical intuition is given for the simplified technique. A desig... View full abstract»

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  • Uniform Design of Multi-Peak Bandwidth Enhancement Technique for Multistage Amplifiers

    Publication Year: 2007 , Page(s): 1489 - 1499
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1827 KB) |  | HTML iconHTML  

    A new technique for designing uniform multistage amplifiers (MAs) for high-frequency applications is introduced. The proposed method uses the multi-peak bandwidth enhancement technique while it employs identical, simple and inductorless stages. The intrinsic capacitances within transistors are exploited by the active negative feedbacks to expand the bandwidth. While all stages of the proposed MA t... View full abstract»

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  • An Ultra-Low-Power Long Range Battery/Passive RFID Tag for UHF and Microwave Bands With a Current Consumption of 700 nA at 1.5 V

    Publication Year: 2007 , Page(s): 1500 - 1512
    Cited by:  Papers (28)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3268 KB) |  | HTML iconHTML  

    We present for the first time, a fully integrated battery powered RFID integrated circuit (IC) for operation at ultrahigh frequency (UHF) and microwave bands. The battery powered RFID IC can also work as a passive RFID tag without a battery or when the battery has died (i.e., voltage has dropped below 1.3 V); this novel dual passive and battery operation allays one of the major drawbacks of curren... View full abstract»

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  • Efficient Look-Up-Table-Based Modeling for Robust Design of Σ∆ ADCs

    Publication Year: 2007 , Page(s): 1513 - 1528
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1415 KB) |  | HTML iconHTML  

    The sigma-delta (SigmaDelta) analog-digital converter (ADC) has been widely used in data conversion applications due to its good performance. However, oversampling and complex circuit behaviors render the transistor-level analysis of these designs prohibitively time consuming. The inefficiency of the standard simulation approach also rules out the possibility of analyzing the impacts of a multitud... View full abstract»

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  • Least-Squares-Based Switching Structure for Lossless Image Coding

    Publication Year: 2007 , Page(s): 1529 - 1541
    Cited by:  Papers (19)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3062 KB) |  | HTML iconHTML  

    Many coding methods are more efficient with some images than others. In particular, run-length coding is very useful for coding areas of little changes. Adaptive predictive coding achieves high coding efficiency for fast changing areas like edges. In this paper, we propose a switching coding scheme that will combine the advantages of both run-length and adaptive linear predictive coding. For pixel... View full abstract»

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  • Piecewise-Linear Identification of Nonlinear Dynamical Systems in View of Their Circuit Implementations

    Publication Year: 2007 , Page(s): 1542 - 1554
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1809 KB) |  | HTML iconHTML  

    We address here an aspect of the problem concerning circuit implementations of nonlinear dynamical systems that depend on control parameters. In particular, the problem of the identification of such systems is addressed in two steps. The first step uses the state-space reconstruction (through time delay reconstruction associated with principal component analysis) on the basis of scalar time series... View full abstract»

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  • Inverse Class-E Amplifier With Transmission-Line Harmonic Suppression

    Publication Year: 2007 , Page(s): 1555 - 1561
    Cited by:  Papers (22)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (876 KB) |  | HTML iconHTML  

    This paper reports on the design methodology and experimental characterization of the inverse class-E power amplifier. A demonstration amplifier with excellent second and third harmonic-suppression levels has been designed, constructed, and measured. The circuit fabricated using a 1.2-mm gate-width GaAs MESFET is shown to be able to deliver 22-dBm output power at 2.3 GHz. The amplifier achieve a p... View full abstract»

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  • Crosstalk in Balanced Interconnections Used for Differential Signal Transmission

    Publication Year: 2007 , Page(s): 1562 - 1572
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (412 KB) |  | HTML iconHTML  

    This paper introduces a two-stage model for assessing crosstalk in balanced interconnections used for differential signal transmission, such as multipair cables. The first stage considers the interconnection as uniform and uses a change of variables based on the symmetries inherent to balancing, for the definition of a set of parameters to be measured. The second stage of the model takes into acco... View full abstract»

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  • On Designing Time-Varying Delay Feedback Controllers for Master–Slave Synchronization of Lur'e Systems

    Publication Year: 2007 , Page(s): 1573 - 1583
    Cited by:  Papers (38)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1767 KB) |  | HTML iconHTML  

    This paper is concerned with the problem of designing time-varying delay feedback controllers for master-slave synchronization of Lur'e systems. Two cases of time-varying delays are fully considered; one is the time-varying delay being continuous uniformly bounded while the other is the time-varying delay being differentiable uniformly bounded with the derivative of the delay bounded by a constant... View full abstract»

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  • An Analytic Circuit-Based Model for White and Flicker Phase Noise in LC Oscillators

    Publication Year: 2007 , Page(s): 1584 - 1598
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (762 KB) |  | HTML iconHTML  

    A general circuit-based model of LC oscillator phase noise applicable to both white noise and 1/f noise is presented. Using the Kurokawa theory, differential equations governing the relationship between amplitude and phase noise at the tank are derived and solved. Closed form equations are obtained for the IEEE oscillator phase noise for both white and 1/f noise. These solutions introduce new para... View full abstract»

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  • Eigenfunctions of Fourier and Fractional Fourier Transforms With Complex Offsets and Parameters

    Publication Year: 2007 , Page(s): 1599 - 1611
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (745 KB) |  | HTML iconHTML  

    In this paper, we derive the eigenfunctions of the Fourier transform (FT), the fractional FT (FRFT), and the linear canonical transform (LCT) with (1) complex parameters and (2) complex offsets. The eigenfunctions in the cases where the parameters and offsets are real were derived in literature. We extend the previous works to the cases of complex parameters and complex offsets. We first derive th... View full abstract»

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  • 2008 IEEE International Symposium on Circuits and Systems-engineering the environmental revolution (ISCAS 2008)

    Publication Year: 2007 , Page(s): 1612
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    Freely Available from IEEE
  • Special issue on multifunctional circuits and systems for future generations of wireless communications

    Publication Year: 2007 , Page(s): 1613
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    Freely Available from IEEE
  • IEEE Transactions on Circuits and Systems—I: Regular Papers Information for authors

    Publication Year: 2007 , Page(s): 1614
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    Freely Available from IEEE
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    Publication Year: 2007 , Page(s): 1615
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  • Leading the field since 1884 [advertisement]

    Publication Year: 2007 , Page(s): 1616
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  • IEEE Circuits and Systems Society Information

    Publication Year: 2007 , Page(s): C3
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    Freely Available from IEEE

Aims & Scope

The theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Shanthi Pavan
Indian Institute of Technology, Madras