Proceedings of the IEEE

Issue 12 • Dec. 1977

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Displaying Results 1 - 25 of 28
  • [Front cover and table of contents]

    Publication Year: 1977, Page(s): c1
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  • Scanning the issue

    Publication Year: 1977, Page(s): 1635
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  • Digital speech networks

    Publication Year: 1977, Page(s):1636 - 1658
    Cited by:  Papers (46)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2606 KB)

    Digital techniques, already widely used for transmission of data, are now being introduced in the field of voice communications. By appreciating some of the long-range implications of this trend we can help point the way towards appropriate usage of this developing technology for improved customer service. This paper focuses on the voice problem and the possibilities offered by complete digitizati... View full abstract»

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  • Overview of electrostatic devices for control of submicrometer particles

    Publication Year: 1977, Page(s):1659 - 1669
    Cited by:  Papers (25)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1173 KB)

    The electrostatic precipitator (ESP) is the most widely used of a family of air pollution control devices that primarily exploit electrical forces in the control of particulate emissions. Others are the space-charge precipitator (SCP) (where the electric precipitation field is generated by the particles being collected), the self-agglomerate (SAG) (where oppositely charged particles are induced to... View full abstract»

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  • Receiver design for optical fiber systems

    Publication Year: 1977, Page(s):1670 - 1678
    Cited by:  Papers (29)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (961 KB)

    This paper is a tutorial review of the theory and practice of receiver design for optical fiber communication systems. Topics discussed include fundamental limitations on performance; design and performance limitations of laboratory receivers; and practical design trade-offs and their effects on the performance of real system receivers. View full abstract»

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  • High-power laser propagation: Thermal blooming

    Publication Year: 1977, Page(s):1679 - 1714
    Cited by:  Papers (4)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4269 KB)

    This paper presents a tutorial review of the self-induced thermal distortion of laser radiation propagating in absorbing media. The distortion of the laser beam is the result of heating of the path by absorption of a small fraction of the laser beam power by the medium which changes the index of refraction and therefore distorts the beam. Thermal-blooming effects can limit the laser powers which c... View full abstract»

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  • Comments on "Cross-polarization in satellite and earth-station antennas"

    Publication Year: 1977, Page(s):1716 - 1717
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (263 KB)

    Improved understanding of the cross-polarization characteristics of reflector antennas has recently lead to the development of several techniques by which the cross-polarization of off-set-fed reflectors can be controlled, so that this attractive antenna type with its many advantages can be used in frequency re-use systems. In the light of this, some conclusions of the above paper should be modifi... View full abstract»

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  • On minimal realization of transfer function matrices using Markov parameters and moments

    Publication Year: 1977, Page(s):1717 - 1719
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    An algorithm is presented for obtaining a minimal order realization from a given rational transfer function matrix using the combination of Markov parameters and moments. The technique requires construction of modified Hankel matrix and then its transformation to Hermite normal form using outer products. The realization can be achieved in fixed number of operations on the Hankel matrix. The propos... View full abstract»

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  • Properties of nonrecursive digital filtered ternary maximal length pseudo-random sequences

    Publication Year: 1977, Page(s):1719 - 1720
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (186 KB)

    It is shown that a filtered ternary m-sequence has no skewing in amplitude distribution, zero autocorrelation function, and the cross-correlation between the sequence itself and the sequence squared is also zero. Some useful properties of ternary m-sequence are also listed. View full abstract»

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  • On the realization of some low-component frequency generators

    Publication Year: 1977, Page(s):1720 - 1721
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (183 KB)

    Simple circuits of sinusoidal frequency generators are obtained using the frequency-dependent negative resistance (FDNR) approach. The nonideal FDNR's employed in the realizations are canonic, and use a single operational amplifier in low-gain connection. Moreover, they are shown to be easily obtained from the well-known grounded inductance simulators. The oscillators offer active and passive comp... View full abstract»

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  • High-performance differential quartets

    Publication Year: 1977, Page(s):1721 - 1723
    Cited by:  Papers (6)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (321 KB)

    A new type of differential amplifier is analyzed and experimentally demonstrated. The transconductance is accurately determined by an external resistor and is constant up to 99 percent of the load current swing. In the absence of the external resistor, very high transconductance is also obtainable. View full abstract»

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  • Single-section lumped model for distributed RC notch filters

    Publication Year: 1977, Page(s):1723 - 1725
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (311 KB)

    A single-section lumped model is used to explain the distributed RC notch filter behavior over the complete frequency range, and is found to give the same values of notch parameters as given by the exact analysis. The model is capable of characterizing not only a notch in its basic form but also when the dissipation losses and the parasitic inductance are considered. View full abstract»

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  • A novel "Follow the master" filter

    Publication Year: 1977, Page(s):1725 - 1726
    Cited by:  Papers (20)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (250 KB)

    Active-R filters have their pole-frequencies directly dependent on the gain-bandwidth (GB) product of the operational amplifiers used. A novel technique, by which the pole-frequencies of the system are made to depend on a stable reference-frequency times the ratio of the GB products, rather than their absolute values, is given. View full abstract»

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  • A new continuously tunable sinusoidal oscillator without external capacitors

    Publication Year: 1977, Page(s):1726 - 1727
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (271 KB)

    A new sinusoidal oscillator circuit using only operational amplifiers (OA's) and resistors, which is attractive for monolithic IC fabrication, is presented. The circuit can be made to oscillate by adjusting a resistor ratio, while its frequency can be controlled over a wide range by a grounded resistor, independent of condition of oscillation. Experimental results are given which agree with the th... View full abstract»

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  • A monolithic 1 × 10 array of silicon avalanche photodiodes

    Publication Year: 1977, Page(s):1727 - 1728
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    A monolithic 1 × 10 array of silicon avalanche photodiodes (Si-APD's) was fabricated. The deviations of breakdown voltages and current gains from mean values in an array were less than ±0.3 and ±2 percent, respectively. The optical interelemental coupling between the adjacent two elements in an array was estimated to be -57 dB. View full abstract»

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  • Deadbeat response to time polynomial inputs

    Publication Year: 1977, Page(s):1728 - 1730
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (307 KB)

    A design method for the deadbeat control of a class of single-input single-output linear time-invariant systems with time polynomial inputs is presented. This procedure is extremely simple, it is based on the state feedback technique and the investigation of the state equation or the state simulation diagram. The design method is illustrated by a numerical example for a sixth-order system. View full abstract»

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  • A comparison of two LMS constrained optimal array structures

    Publication Year: 1977, Page(s):1730 - 1731
    Cited by:  Papers (59)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (190 KB)

    A comparison of two different array processing structures is presented. Both are shown to belong to the least mean square (LMS) constrained class. A proof is presented which shows that these structures yield identical overall processors. View full abstract»

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  • Corrections to "Communication satellite antennas"

    Publication Year: 1977, Page(s): 1731
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  • Further corrections to "Communication satellite antennas"

    Publication Year: 1977, Page(s):1731 - 1732
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  • Combinatorial algorithms

    Publication Year: 1977, Page(s):1732 - 1733
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  • Debugging system 360/370 programs using OS and VS storage dumps

    Publication Year: 1977, Page(s): 1732
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  • Spread spectrum systems

    Publication Year: 1977, Page(s):1733 - 1734
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  • Speech analysis and synthesis, vol. 4

    Publication Year: 1977, Page(s): 1733
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  • Introduction to the theory of Fuzzy subsets

    Publication Year: 1977, Page(s): 1734
    Cited by:  Papers (1)
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  • Applied computation theory analysis, design, modeling

    Publication Year: 1977, Page(s):1734 - 1735
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H. Joel Trussell
North Carolina State University