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Circuits and Devices Magazine, IEEE

Issue 6 • Date Nov.-Dec. 2004

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  • Introduction to Digital Audio Coding and Standards [Book Review]

    Page(s): 52 - 53
    Save to Project icon | Request Permissions | PDF file iconPDF (215 KB)  
    Freely Available from IEEE
  • Pulling the plug on the current drain [threshold switching]

    Page(s): 12 - 16
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (800 KB) |  | HTML iconHTML  

    Power management is one of the main challenges to continued development of large-scale integrated circuits. In particular, the offstate, or standby leakage, is becoming a significant fraction of total power consumption as gate dimensions continue to shrink. A review of the literature identified many possible solutions in the application of threshold-switching devices. This data has apparently never been summarized in one place, suggesting a need for this article. This article discusses the capabilities of classical amorphous semiconductor switches, and more recent advances in silicon, III-V materials, and organic semiconductors that all exhibit threshold-switching properties. Applications and future prospects for the development of more energy-efficient devices are discussed. The long-term vision is that conductors themselves can be engineered to dynamically sense and adapt their conductivity to active or passive states as required. View full abstract»

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  • BJT-BJT, FET-BJT, and FET-FET

    Page(s): 17 - 22
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1123 KB)  

    Cascode amplifiers have three configurations: bipolar junction transistor-bipolar junction transistor (BJT-BJT), field-effect transistor (FET)-BJT, and FET-FET. Although the high-frequency behaviors of these configurations are not the same in practice, in most textbooks only the BJT-BJT configuration is analyzed. High-frequency response of the BJT-BJT cascode amplifier is limited by three factors: 1) the source impedance or the output impedance of the previous stage; 2) the output impedance or the load of the amplifier; and 3) the dc bias current of the amplifier. In order to cope with these limitations, this article presents a modified cascode amplifier. In this new configuration, only a single transistor is added to the elements of each of the aforementioned cascode amplifiers. Corresponding to each configuration, a modified configuration results in greater or approximately equal gain and higher bandwidth. View full abstract»

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  • Is the quadrature oscillator a multivibrator?

    Page(s): 23 - 28
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1103 KB)  

    The aim of this article is to give insight into the mechanisms behind the behavior of oscillators from a new angle, introducing the idea of "frozen eigenvalues." This approach is based on piecewise-linear modelling and a study of the eigenvalues of the time varying linearized Jacobian of the nonlinear differential equations describing the oscillator. A multivibrator and a quadrature oscillator are used as test examples. The mechanisms behind the oscillations of the two circuits are compared. View full abstract»

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  • Hands on Electronics [Book Review]

    Page(s): 53
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    Freely Available from IEEE
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  • VLSI Designer's interface

    Page(s): 3 - 4
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  • Cylindrical Antennas and Arrays [Book Review]

    Page(s): 52
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    Freely Available from IEEE
  • Advertisers Index

    Page(s): 64
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  • Charting the EDA roadmap

    Page(s): 5 - 10
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (305 KB)  

    Moore's law has been the guiding principle for defining the semiconductor roadmap ever since it was proposed in 1965. This article examines and proposes a law that plays the role of Moore's law in the very large-scale integration (VLSI) computer-aided design (CAD) field. This article also examines the difference in nature of semiconductor productivity and design productivity. View full abstract»

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  • 2004 Annual Index [Vol.20]

    Page(s): 56 - 63
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  • RF and AMS

    Page(s): 38 - 51
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    The paper shows four basic circuit functions which are RF transceiver, AMS, power amplifier (PA) and power management (PM), and digital signal processor (DSP). In this article, the authors emphasize the first three circuit functions, which drive analog and RF technology needs. Each of those three major parts in a RF front-end for a wireless system are discussed in a separate section with special emphasis on the device needs and technology choices for those blocks and with main focus on the frequency range from 0.8 to 10 GHz. A section on millimeter wave circuits and devices cover device and technology integration issues for applications in the frequency range starting from 10-100 GHz. Finally, we discuss the evolution of technology choices, integration issues, and potentially new emerging devices, all within the time-frame for the 2003 ITRS roadmap (2003-2018). View full abstract»

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  • IEEE Circuits & Devices

    Page(s): 0_1
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    Freely Available from IEEE
  • IEEE Circuits & Devices Magazine

    Page(s): 0_2
    Save to Project icon | Request Permissions | PDF file iconPDF (185 KB)  
    Freely Available from IEEE
  • IEEE Circuits & Devices - Table of contents

    Page(s): 1
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    Freely Available from IEEE
  • Have you visited lately? See for yourself at www.ieee.org

    Page(s): 11
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    Freely Available from IEEE
  • Clear as a bell [controlling crosstalk in uniform interconnections]

    Page(s): 29 - 37
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2899 KB)  

    Designers are aware of several approaches to reduce crosstalk, such as the use of shields or differential links that require a particular structure for the interconnection. This article discusses known crosstalk mitigation methods and presents a different technique applicable in various situations, which provides a drastic reduction of crosstalk View full abstract»

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  • Conference calendar

    Page(s): 54 - 55
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    Freely Available from IEEE
  • Brain teaser challenge

    Page(s): 0_3
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    Freely Available from IEEE
  • The IEEE Member Digital Library - Subscribe

    Page(s): 04
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    Freely Available from IEEE

Aims & Scope

IEEE Circuits and Devices Magazine (1985-2006) covers the design, implementation, packaging, and manufacture of micro-electronic and photonic devices, circuits and systems

 

This Magazine ceased publication in 2006.

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Meet Our Editors

Editor-in-Chief
Dr. Ronald W. Waynant
r.waynant@ieee.org