IEEE Circuits and Devices Magazine

Issue 1 • Jan. 1991

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Displaying Results 1 - 6 of 6
  • PC programs for engineers

    Publication Year: 1991, Page(s):4 - 6
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (194 KB)

    Two programs are described. The first is a program for digital signal processing that provides for a wide range of input signals and uses the fast Hartley transform for conversions from the time domain to the frequency domain and vice versa. The desired input waveforms can be created internally by the program or imported from an appropriate disk file. The data obtained can be stored in a file as w... View full abstract»

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  • Novel techniques to solve sets of coupled differential equations with SPICE

    Publication Year: 1991, Page(s):11 - 14
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (230 KB)

    The solution of sets of coupled differential equations using SPICE is treated. The equations are rearranged so that each of the variables appears as a current through a 1- Omega resistor, and the SPICE transient analysis option TRAN is used to invoke the DCTRAN module. This module performs the DC operating point analysis, the initial-condition of transient analysis, the DC transfer characteristic ... View full abstract»

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  • Television by the bit

    Publication Year: 1991, Page(s):17 - 21
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (822 KB)

    The various types of advanced television (ATV) are defined, and the most advanced type, high-definition TV (HDTV), is discussed. The present status of HDTV development in the US, Japan, and Europe is examined. Signal processing requirements for HDTV are briefly considered, and the benefits of and prospects for all-digital HDTV are explored. Video compression techniques, implementation issues, and ... View full abstract»

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  • Bringing the fiber to the home

    Publication Year: 1991, Page(s):22 - 25
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    The issues involved in replacing copper telephone lines by fiber all the way to the subscriber's home are examined. The advantages of deploying single-mode fiber in the trunk and local-loop feeder networks are enumerated. The biggest problem namely, how to power the electronics in the absence of copper wire, is discussed. The need to allow a graceful upgrade to capture future opportunities for bro... View full abstract»

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  • In cellular telephone, complexity works

    Publication Year: 1991, Page(s):26 - 32
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    The composition and operation of cellular telephone systems are described. The problems experienced by mobile, automobile-based receivers are discussed. Frequency reuse, which is what provides the high capacity of cellular systems, is examined. A unique feature of the cellular system, the handoff concept, whereby the system can take an ongoing call on one channel and hand it off to another channel... View full abstract»

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  • Microelectronic switched capacitor filters

    Publication Year: 1991, Page(s):33 - 36
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (286 KB)

    An explanation of what switched-capacitor (SC) filters are and how they work is given. Attention is focused on low-sensitivity SC filters, which can be developed from a general passive ladder where the branches are arbitrary impedances. The equations that describe the filter components are reviewed, and the characteristics of these low-sensitivity filters are outlined. Applications of the filters ... View full abstract»

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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