Scheduled System Maintenance
On Saturday, October 21, single article sales and account management will be unavailable until 6 PM ET.
Notice: There is currently an issue with the citation download feature. Learn more.

Proceedings of the IEEE

Issue 12 • Dec. 1970

Filter Results

Displaying Results 1 - 23 of 23
  • [Front cover and table of contents]

    Publication Year: 1970, Page(s): c1
    Request permission for commercial reuse | PDF file iconPDF (321 KB)
    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1970, Page(s): 1877
    Request permission for commercial reuse | PDF file iconPDF (153 KB)
    Freely Available from IEEE
  • Sensory aids for the blind: A challenging problem with lessons for the future

    Publication Year: 1970, Page(s):1878 - 1898
    Cited by:  Papers (23)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5918 KB)

    The two major objectives of sensory aids for the blind are to permit access to printed matter and to permit safe travel through the environment. The difficulties of designing technological means to achieve these objectives are in many respects unrelated to the concerns of the engineering laboratory. Social, economic, political, and logistic considerations all play a role. The "blind population" in... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An experimental and theoretical study of high repetition rate Q-switched Nd: YA1G lasers

    Publication Year: 1970, Page(s):1899 - 1914
    Cited by:  Papers (23)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2942 KB)

    An acoustooptic loss modulator made by bonding an X-cut quartz transducer to a fused silica scattering medium offers a practical means for repetitively Q-switching continuously pumped Nd : YAlG lasers at repetition rates up to 50 kHz. The peak power output of a multitransverse mode laser is typically enhanced by a factor of about 500 relative to CW operation at low (≪5 kHz) repetition rates ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The role of low temperatures in the operation of logic circuitry

    Publication Year: 1970, Page(s):1914 - 1932
    Cited by:  Papers (33)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2059 KB)

    It has often been suggested that operating logical circuitry at low temperatures would have many advantages. The purpose of this paper is to evaluate such suggestions quantitatively. Changes in physical properties of materials upon cooling to low temperatures have been analyzed to determine their impact on the parameters which control the performance of logical circuitry. The following topics have... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Networks with very small and very large parasitics: Natural frequencies and stability

    Publication Year: 1970, Page(s):1933 - 1938
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (554 KB)

    This paper considers a nonlinear time-invariant network N (of order n+h+l) which contains, in addition to the usual elements, h stray elements (stray capacitances and lead inductances) and l sluggish elements (chokes and coupling capacitors). It is proved that the asymptotic stability of any equilibrium point of N is guaranteed once the simplified (i.e., with stray and sluggish elements neglected)... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optical probing of surface acoustic waves

    Publication Year: 1970, Page(s):1939 - 1947
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1097 KB)

    Light diffraction by surface acoustic waves is used in studying the propagation characteristics of Rayleigh waves on y-cut z-oriented LiNbO3. In reflection, only the surface deformation contributes to the diffracted light. In transmission, the photoelastic effect, which is incident beam polarization dependent, must also be considered. Such optical probing has been used to study the Fres... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An electronic model of the retina

    Publication Year: 1970, Page(s):1950 - 1951
    Cited by:  Papers (22)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (515 KB)

    An electronic model of the retina has been developed with a new technique in making interconnections between the cells. The model consists of about 700 photoreceptors and the same number of output cells. The output cells have concentric on-center type receptive fields and show the Mach-band and the Broca-Sulzer effects. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the evaluation of the transition matrix

    Publication Year: 1970, Page(s):1951 - 1953
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (253 KB)

    A simple method for evaluating the transition matrix is given. The method requires a comparatively small number of calculations, specially if the order of the system is high. A specific example illustrates the method. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Stability of a sampled phase-lock loop

    Publication Year: 1970, Page(s):1953 - 1954
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (141 KB)

    Phase-lock loops used for tracking short pulses will often have a sample and hold circuit incorporated into the phase detector, making the loop potentially unstable. A stability criterion and stability margins are presented. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Holographic imaging at 70 GHz

    Publication Year: 1970, Page(s):1955 - 1956
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    Lensless Fourier transformation (LFT) holograms of a (1 by 0.75 cm) rectangular aperture of a millimeter wave horn approximating a point source and of an extended object in the form of a back-illuminated opaque letter A have been formed using 70-GHz coherent millimeter wave radiation. A spiral scan format was utilized to record the net irradiance in the hologram plane with the aid of a millimeter ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Size detectors

    Publication Year: 1970, Page(s):1956 - 1957
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (265 KB)

    An edge separation method of detecting one-dimensional objects in a given size range is described, and its capabilities contrasted with those of the conventional linear matched filter approach to object detection. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of the junction capacitance variation and a small inductance on the switching time of a tunnel diode

    Publication Year: 1970, Page(s):1957 - 1959
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (318 KB)

    Analytic closed-form switching time expressions of a tunnel diode are derived considering the voltage dependence of the diode junction capacitance and a small inductance that is always associated with the trigger circuit. The contribution due to the capacitance variation and that due to the inductance are expressed by a separate term added in the usual switching time results. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frequency interpolation correction for Alouette II ionograms

    Publication Year: 1970, Page(s):1959 - 1960
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (245 KB)

    Frequencies scaled from an Alouette II ionogram can be in error by five times the resolution of the sounder system when linear interpolation is used between the nominal values of the frequency markers. These errors are significant for certain geophysical measurements. A correction procedure is presented which allows frequency measurements to be made with an accuracy comparable to the resolution. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comments on "Influence of epitaxial mounds on the yield of integrated circuits"

    Publication Year: 1970, Page(s):1960 - 1961
    Cited by:  Papers (3)
    Request permission for commercial reuse | PDF file iconPDF (210 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comments on "A method of power measurement"

    Publication Year: 1970, Page(s): 1961
    Request permission for commercial reuse | PDF file iconPDF (119 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radar dynamic range centering for log-normal target statistics

    Publication Year: 1970, Page(s):1961 - 1962
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (181 KB)

    The receiver dynamic range centering studies of Ward and Rappaport have been extended to the situation where the radar signal amplitude statistics have the log-normal form. Results analogous to those previously published for the Rayleigh and modified Rayleigh cases are presented graphically, and show that receiver dynamic ranges considerably larger than those for the Rayleigh distribution may be r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new method for impedance control of induction motor speed

    Publication Year: 1970, Page(s):1962 - 1964
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (225 KB)

    A novel induction machine with continuous speed control is found possible. This motor may be regarded as an inverted version of a Schrage motor in construction in that the tertiary winding is placed along with the secondary (on the stator) rather than with the primary (on the rotor). Hence a static commutator connected to the tertiary winding with the brushes placed over it at the appropriate plac... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Approximations for lognormally fading optical signals

    Publication Year: 1970, Page(s):1964 - 1965
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (210 KB)

    A lognormally distributed random variable can be used to approximate accurately a noncentral chi-square random variable, This letter uses this result to approximate the photoelectron count distribution of a lognormally fading optical signal. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A reactance circuit derivation of the gyrator

    Publication Year: 1970, Page(s):1965 - 1966
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (195 KB)

    The electronic gyrator is shown to be derived from a simple electronic reactance circuit. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reciprocity relationships for bianisotropic media

    Publication Year: 1970, Page(s):1966 - 1967
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (191 KB)

    Reciprocity relationships for electromagnetic fields with general time dependence in bianisotropic media are derived and discussed. Constitutive relations of complementary media are defined to warrant a modified reciprocity relationship. As a consequence, the magnetoelectric media, the Tellegen media, and the moving media are all nonreciprocal. The complementary media to uniformly moving media wit... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pulse response analysis of a complementary MOSFET inverter by the hyperbolic functional description

    Publication Year: 1970, Page(s):1967 - 1968
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (167 KB)

    The characteristic equation of a MOSFET which up to the present has been expressed by two equations is given by a single equation using a hyperbolic function. The pulse response analysis of a complementary MOSFET inverter is carried out with the use of this new characteristic equation, and the results that have been shown by several equations are represented by a single equation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • [Back cover]

    Publication Year: 1970, Page(s): c4
    Request permission for commercial reuse | PDF file iconPDF (5262 KB)
    Freely Available from IEEE

Aims & Scope

The most highly-cited general interest journal in electrical engineering and computer science, the Proceedings is the best way to stay informed on an exemplary range of topics.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
H. Joel Trussell
North Carolina State University