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Proceedings of the IEEE

Issue 7 • July 1967

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Displaying Results 1 - 25 of 55
  • [Front cover and table of contents]

    Publication Year: 1967, Page(s): c1
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1967, Page(s): 1127
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    Freely Available from IEEE
  • Noise induced gain saturation in the ultrasonic traveling wave amplifier

    Publication Year: 1967, Page(s):1128 - 1135
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1186 KB)

    A relationship has been established between departure from small signal theory gain, the onset of nonohmic I-V characteristics, and gain saturation on broadband acoustic noise flux in the CdS ultrasonic amplifier. Noise figure measurements in material whose experimental gain behaves according to small signal theory have allowed evaluation of the level of acoustic flux at the amplifier output plane... View full abstract»

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  • Data structure and man-machine communication for network problems

    Publication Year: 1967, Page(s):1135 - 1144
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2010 KB)

    A program which provides man-machine communication for the analysis of electronic circuits on a time-sharing computer is presented. The program is a part of AEDNET, a simulator for nonlinear networks, written in the AED-0 language and operating on the Project MAC time-sharing computer. The Electronic Systems Laboratory display console is used as a graphical input-output device on which the circuit... View full abstract»

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  • Frequency measurement using the phase-controlled oscillator

    Publication Year: 1967, Page(s):1144 - 1153
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1148 KB)

    This paper describes the application of the phase-controlled oscillator to precision frequency comparison in order to improve the measurement accuracy. A relation derived between the counter readings, which measure the average frequency over time T, and the power spectrum of the added phase noise forms the basis for the design of the loop in various applications: frequency comparison, optimization... View full abstract»

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  • Dispersion relations in time-space periodic media part II—Unstable interactions

    Publication Year: 1967, Page(s):1154 - 1168
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1643 KB)

    The conditions sufficient to assert the existence of absolute (time-growing) instabilities in distributed parametric structures or media are shown. Treating the simple, linearized, time-space periodic transmission line model, it is shown that time-growing instabilities exist in an unbounded medium whenever the pump modulation velocity is greater then the characteristic velocity of the medium and i... View full abstract»

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  • Effects of ionizing radiation on oxidized silicon surfaces and planar devices

    Publication Year: 1967, Page(s):1168 - 1185
    Cited by:  Papers (228)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1765 KB)

    This paper examines in detail the effects of high and low energy electron, X-ray, and ultraviolet radiation on oxidized silicon surfaces and planar devices. Two permanent effects of ionizing radiation on oxidized silicon surfaces are distinguished: 1) The buildup of a positive space charge within the oxide, and 2) The creation of fast surface states at the oxide-silicon interface resulting in incr... View full abstract»

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  • Frequency stabilization of the FM laser

    Publication Year: 1967, Page(s):1185 - 1192
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1259 KB)

    A technique for the frequency stabilization of an FM laser is discussed. This technique employs a stabilization discriminant derived from a residual variation of the phase and amplitude of the small FM laser beat note at the modulation frequency, as the frequency of the FM carrier moves across the Doppler gain profile. A first-order analysis describes the dependence of that stabilization discrimin... View full abstract»

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  • Analysis of harmonic generator circuits for step recovery diodes

    Publication Year: 1967, Page(s):1192 - 1194
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (210 KB)

    This paper gives formulas for the transients in a simple lossless harmonic generator circuit consisting of a step recovery diode, two inductors, and two capacitors. By means of graphic plots of the instantaneous values of currents and voltages, it is concluded that high efficiency requires approximately equal values of the two inductors. View full abstract»

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  • Harmonic mixing and the heterodyne detection of laser radiation

    Publication Year: 1967, Page(s): 1197
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (120 KB)

    An experiment is described in which prime and irreducible multiples of fundamental frequencies near 70 GHz are mixed with radiation from a carcinotron at 300 GHz. Forty-seven orders of mixing were observed. From the recent successful mixing of 75 GHz with radiation of a CN laser at 964 GHz, it is argued that in the above experiment 3300 GHz were actually present in the mixer. View full abstract»

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  • A new laser line in tin using stannic chloride vapor

    Publication Year: 1967, Page(s): 1198
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    A tin lasing line at 6579 Å has been observed in a pulsed gaseous discharge in SnCl4vapor. Lasing was also observed on Cl II lines in the discharge. The laser output had an annular appearance and the tin line lased only during the period of current increase. View full abstract»

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  • A self-compensating lumped element broadband HF directional coupler

    Publication Year: 1967, Page(s):1199 - 1200
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (167 KB)

    A novel design criterion for the lumped element coaxial transmission line directional coupler is discussed for HF band operation (2 to 30 MHz). This technique utilizes the inherent self-compensating low-pass equalizing characteristic of a high reactance secondary transformer winding. Experimental results of a representative coupler design are shown. View full abstract»

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  • The relationship between noise and impedance matching in a negative resistance amplifier

    Publication Year: 1967, Page(s):1200 - 1201
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (197 KB)

    It is shown that a relationship exists between the impedance matching at the output port of a negative resistance amplifier and its noise performance. The class of amplifiers considered is characterized by a lossless embedding network and by negative resistances having the same noise exchangeable power. View full abstract»

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  • CORAD (color radar)

    Publication Year: 1967, Page(s):1201 - 1202
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (219 KB)

    A new system is presented for displaying radar signal parameters in color using techniques based on the modern math application of Venn-Euler diagrams. These diagrams are portrayed on a standard color television picture tube. The observer can monitor several signal parameters simultaneously which are in the form of dynamic kaleidoscopic patterns. The system appears to be most applicable to resolvi... View full abstract»

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  • Multivariable control system synthesis utilizing the generalized inverse of a matrix

    Publication Year: 1967, Page(s):1202 - 1203
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (175 KB)

    By utilizing the concept of the generalized inverse of a matrix, it is possible to obtain more complete multivariable control system design equations than have previously been published. Also, condition equations can define the limitations which must be imposed upon the desired system H' in order to realize a mathematical solution. View full abstract»

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  • Anomalies in transistor low-frequency noise

    Publication Year: 1967, Page(s):1204 - 1205
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (231 KB)

    Accurate low-frequency noise measurements over the range of 1 Hz to 10 kHz on a number of different transistor types showed that the majority obey the f-law, the factor α being between 0.96 and 1.23. Certain samples, however, exhibited an additional noise component with a frequency dependence of the form [1 + (f/f0)2]-1. View full abstract»

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  • Comments on "Optimization of beam efficiency and synthesis of nonuniformly spaced arrays"

    Publication Year: 1967, Page(s):1205 - 1206
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  • An analog multiplier

    Publication Year: 1967, Page(s): 1206
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (72 KB)

    A different approach to analog multiplication results in a four-quadrant multiplier using a field-effect transistor FET in a feedback network. The linear multiplication is obtained by operating the FET as a voltage-controlled conductance. View full abstract»

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  • Quantization error bounds for hybrid control systems

    Publication Year: 1967, Page(s):1206 - 1207
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (145 KB)

    A useful quantization error bound is obtained for hybrid digital-analog control systems. The error is bounded by a time-varying function that becomes zero if the digital computer has no time or ordinate quantization error. The error bound may either converge or diverge depending on the magnitudes involved. The analysis is valid for a hybrid computerization of a linear time-varying system. Sharp re... View full abstract»

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  • Evaporation of electric wire electrodes caused by ac arc discharge of heavy currents

    Publication Year: 1967, Page(s):1207 - 1208
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (194 KB)

    This letter presents fundamental data on electrode evaporation caused by arc discharge of heavy currents. The reduction in the mass of the wire, i.e., the evaporated mass of the wire, is shown to linearly increase in proportion to the product of the current and the time of the arc. Also, the magnitude of the evaporation was larger in the order of Cu, Fe, and Al. View full abstract»

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  • Comments on "Laser wave propagation through the atmosphere"

    Publication Year: 1967, Page(s): 1209
    Cited by:  Papers (2)
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  • Comment on "A bistable flip-flop circuit using tunnel diode"

    Publication Year: 1967, Page(s):1209 - 1210
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (171 KB)

    A flip-flop circuit suggested by Uzunoglu is considered a little further using ideas of load lines and dynamic trajectories. Owing to stringent requirements it appears that the operation of the circuit is somewhat marginal. This leads to the conclusion that the circuit is not a very practical proposition. View full abstract»

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  • Dominant mode reflection at circular horn junctions

    Publication Year: 1967, Page(s):1210 - 1211
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    Reflection of TE11waves at the junction between a circular waveguide and a conical horn was measured. The results were compared with theoretical results of Piefke [4] and Unger [6], and agreed closely with those of Piefke. View full abstract»

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  • Ternary sequence with zero correlation

    Publication Year: 1967, Page(s):1211 - 1213
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (301 KB)

    A method of generating ternary sequences with zero cyclic correlation except for the spike for zero lag is described. The sequences are of length given by (3n-1)/2 where n is odd. A method of generating uncorrelated sequences derived from the ternary sequence modified by a Hadamard matrix is indicated. View full abstract»

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  • On the radiation fields of rhombic antennas buried in snow

    Publication Year: 1967, Page(s):1213 - 1214
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (222 KB)

    The purpose of this letter is to describe a method of approximately determining the radiation fields of rhombic antennas buried in snow. This method is based on reciprocity arguments in conjunction with an assumed current distribution in the rhombic. View full abstract»

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North Carolina State University