Proceedings of the IEEE

Issue 8 • Aug. 1970

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Displaying Results 1 - 25 of 26
  • [Front cover and table of contents]

    Publication Year: 1970, Page(s): c1
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1970, Page(s): 1177
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    Freely Available from IEEE
  • Noise in solid-state devices and lasers

    Publication Year: 1970, Page(s):1178 - 1206
    Cited by:  Papers (128)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2839 KB)

    A survey is given of the most important noise problems in solid-state devices. Section II discusses shot noise in metal-semiconductor diodes, p-n junctions, and transistors at low injection; noise due to recombination and generation in the junction space-charge region; high-level injection effects; noise in photodiodes, avalanche diodes, and diode particle detectors, and shot noise in the leakage ... View full abstract»

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  • The metal-nitride-oxide-silicon (MNOS) transistor—Characteristics and applications

    Publication Year: 1970, Page(s):1207 - 1219
    Cited by:  Papers (65)  |  Patents (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2661 KB)

    Recent advances in silicon nitride deposition techniques have led to the emergence of the metal-nitride-oxide-silicon (MNOS) integrated circuit technology as an alternative and supplement to the existing MOS technology. Applications of MNOS field-effect transistors have been proposed for both logic circuits (as an alternative to MOS transistors) and nonvolatile memory arrays This paper reviews the... View full abstract»

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  • Feasibility of electrooptic devices utilizing ferroelectric bismuth titanate

    Publication Year: 1970, Page(s):1220 - 1229
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1298 KB)

    A feasibility study has shown that Bi4Ti3O12can be used to form a matrix-addressed display possessing gray scale and capable of operating at TV speed and resolution. As compared with other matrix-addressed schemes, the Bi4Ti3O12display has the advantages of high contrast and brightness, low power, no interface connection problems, a... View full abstract»

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  • Lenses and graded films for focusing and guiding acoustic surface waves

    Publication Year: 1970, Page(s):1230 - 1237
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (948 KB)

    Two novel schemes for guiding acoustic surface waves along curved paths on isotropic substrates are described. One involves the deposition of a slowing film of graded thickness along the intended path on a dielectric substrate. Paraxial-ray equations are developed to describe the ray paths adjacent to the axis of the guiding film, which are determined by the slowing factor resulting from a variabl... View full abstract»

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  • Surface elastic waves

    Publication Year: 1970, Page(s):1238 - 1276
    Cited by:  Papers (223)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5931 KB)

    Many of the recently discovered characteristics and applications to electronics of surface elastic waves are discussed. First the propagation of various elastic waves at the surfaces of solids is considered, followed by descriptions of the many ways which have been demonstrated for transduction between surface elastic waves and electromagnetic waves. Surface-wave amplification, primarily in semico... View full abstract»

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  • A new astable direct-coupled multivibrator

    Publication Year: 1970, Page(s):1278 - 1279
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (221 KB)

    RC-coupled astable multivibrators which produce square waves have been described in many textbooks. In this letter a new astable multivibrator is introduced in which the collectors and the bases of both transistors are directly coupled to each other. The switching action takes place by means of a unique arrangement of the circuit elements. Triangular waves are produced at the transistor emitters. View full abstract»

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  • The effective reflection coefficients in forward scatter from a dielectric slightly rough surface

    Publication Year: 1970, Page(s): 1279
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (119 KB)

    Expressions for the effective reflection coefficients are derived using Rice's theory for forward scattering of electromagnetic waves from a dielectric slightly rough surface. In the limiting case of a perfect conductor (ε = -i∞), the coefficients agree with the classical expressions derived by Rice. View full abstract»

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  • A new type of pulse-generating diode in GaAs

    Publication Year: 1970, Page(s):1279 - 1280
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (583 KB)

    Experimental results obtained on a high-speed large-amplitude pulse-generating device in GaAs are presented. An output voltage of 10 volts, the half-value width of 500 picosecond pulse, was obtained. The pulse-repetition rate was varied with the dc bias current from 104to 105Hz. View full abstract»

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  • Single-tuned all-pass active network with a high slope of the phase-frequency characteristic

    Publication Year: 1970, Page(s):1280 - 1282
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    The fundamental relations are given for a new single-tuned all-pass active network made with no lossless reactive components. With this circuit it is possible to realize a high adjustable slope of the phase-frequency characteristic. In addition, the center frequency can be shifted independently. View full abstract»

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  • UHF avalanche diode oscillator providing 400 watts peak power and 75 percent efficiency

    Publication Year: 1970, Page(s):1282 - 1283
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (359 KB)

    High-efficiency high-peak power at UHF frequencies has been generated using commercial rectifier diodes operating as avalanche oscillators in simple tuned circuits. Peak power outputs are as high as 400 watts with as much as 75 percent efficiency. Oscillators have been operated in both coaxial and microstrip circuits using single and multiple-paralleled diode arrangements, and are mechanically tun... View full abstract»

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  • Properties of a blue-emitting IR pumped YF3:Yb, Tm diode

    Publication Year: 1970, Page(s):1283 - 1285
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (309 KB)

    A practical blue-light-emitting diode using the IR pumped phosphor YF3:Yb, Tm is described. The emission spectrum of the coated GaAs:Si diode exhibits peaks at 4750, 6450, 7000, 8000, and 9500 Å. Visually, the unfiltered emission appears blue with a purple cast due to the red 6450 Å peak. A luminance as high as 60 fL in the blue has been achieved using reasonable current densi... View full abstract»

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  • X-band silicon TRAPATT diodes

    Publication Year: 1970, Page(s):1285 - 1286
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    Pulsed TRAPATT diodes have been successfully operated in X-band with 20 percent efficiency and 15 W output power. The diodes operate at the first subharmonic of the IMPATT frequency. Similar diodes have yielded 35 percent efficiency at 5.3 GHz as oscillators, and 54 percent efficiency at 3 GHz as RF triggered amplifiers. View full abstract»

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  • Discrete and fast Fourier transformations on N-dimensional lattices

    Publication Year: 1970, Page(s):1286 - 1288
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (255 KB)

    The N-dimensional discrete Fourier transform (DFT) may be represented as a matrix of elements of unit magnitude, with the arguments constructed as inner products of lattice vectors in the sampling and wavenumber domains, filling regions inverse to the basic cells on their respective lattices. The fast Fourier transform numerical technique is directly applicable to this configuration. View full abstract»

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  • Differential amplifier input impedance

    Publication Year: 1970, Page(s):1288 - 1289
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (189 KB)

    The analysis of a simple differential amplifier excited by two separate voltage sources reveals that the input impedance which loads the voltage source at the inverting input is not a constant but rather is a function of the characteristics of each voltage source. An expression is derived for the input impedance and the result is illustrated in a simple example. View full abstract»

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  • Zero temperature coefficient of resonant frequency in LiTaO3length expander bars

    Publication Year: 1970, Page(s):1289 - 1290
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (185 KB)

    Zero temperature coefficient of resonant frequency has been found in LiTaO3length expander bars with orientations zyw (+ 30 deg), zyw (+35 deg), and zyw (+45 deg). These bars have large coupling constants k32(more than 20 percent). The zyw (+30 deg) bar is the most promising for wide-band bandpass filter applications because it shows the smallest change in the coupling consta... View full abstract»

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  • A new look at yield of integrated circuits

    Publication Year: 1970, Page(s):1290 - 1291
    Cited by:  Papers (77)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    Expressions are derived for integrated-circuit yield as a function of active circuit area, using as a model random distributions of indistinguishable spot defects. Previous attempts to calculate integrated-circuit yield have used a nonrandom distribution of distinguishable spot defects as their model. View full abstract»

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  • An LSA-mode transferred-electron-diode oscillator for microstrip

    Publication Year: 1970, Page(s):1291 - 1292
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (191 KB)

    A microstrip cavity is described for transferred-electron diodes operated in the LSA mode. View full abstract»

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  • Distortion of pulsed signals when the group delay is a nonlinear function of frequency

    Publication Year: 1970, Page(s):1292 - 1294
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    An analysis for the propagation of a Gaussian-modulated signal through a dispersive channel is presented. Both quadratic-and cubic-type phase distortions are permitted. It is shown that the envelope of the detected signal is characterized by an Airy function. View full abstract»

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  • A novel TRAPATT oscillator design

    Publication Year: 1970, Page(s):1294 - 1295
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (198 KB)

    A new type of silicon TRAPATT diode has been fabricated and tested. The diode has been designed to operate as a continuous-wave TRAPATT diode in the 4- to 6-GHz range. The diode structure is novel in that it employs an asymmetric double-sided design in which one side is optimized for TRAPATT operation and the other side is optimized for the generation of the 50-GHz IMPATT oscillations required for... View full abstract»

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  • Time-optimal control of sampled-data systems

    Publication Year: 1970, Page(s):1295 - 1297
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (309 KB)

    The matrix pseudoinverse is used to obtain a minimum-time control law for a general nth-order linear time-invariant completely state-controllable sampled-data system with r inputs. The control law is unique only in certain special cases. In the general case several time-optimal control sequences may exist; the particular control law obtained is shown to require minimum energy. View full abstract»

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  • Passive (cooperative) hologram radar

    Publication Year: 1970, Page(s): 1297
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    The extension of stationary-coherent radar to a purely passive configuration and to a cooperative active configuration is described. A possible use in airport surveillance of aircraft is noted. View full abstract»

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  • Variable frequency crystal oscillator using variable negative inductance or capacitance

    Publication Year: 1970, Page(s):1298 - 1299
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (140 KB)

    This letter refers to one by Capparelli and Verrazzani [1]. Its aim is to present new techniques for building a variable frequency crystal oscillator based on the use of a negative inductor or capacitor. The interval available for the frequency deviation is larger than the one existing between the natural frequencies fpand fsof the crystal. The spurious frequencies uncontroll... View full abstract»

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  • Comments on "Signal-to-noise ratios in logarithmic amplifiers"

    Publication Year: 1970, Page(s): 1300
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