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Proceedings of the IEEE

Issue 10 • Date Oct. 1963

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Displaying Results 1 - 25 of 45
  • [Front cover and table of contents]

    Publication Year: 1963 , Page(s): c1
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    Freely Available from IEEE
  • Poles and zeros

    Publication Year: 1963 , Page(s): 1287
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  • The United Engineering Center - A job to be completed

    Publication Year: 1963 , Page(s): 1288
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  • IEEE support of the UEC fund campaign

    Publication Year: 1963 , Page(s): 1289
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  • Frontispiece

    Publication Year: 1963 , Page(s): 1290
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  • Scanning the issue

    Publication Year: 1963 , Page(s): 1291
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  • Theory and application of self-heated thermistors

    Publication Year: 1963 , Page(s): 1292 - 1305
    Cited by:  Papers (12)
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    A thermistor is defined in conjunction with its application as a two-terminal circuit element. The three major thermistor characteristics, by which all applications are classified, are defined and discussed. Of the three characteristics, the static voltage-current characteristic is the subject of emphasis in the discussion, with mention made of both the corresponding applications and the theoretical and practical limitations on the performance of the incorporated thermistors. Small-and large-signal analysis techniques are described and a small-signal equivalent circuit for a thermistor is developed. Both the large- and small-signal analysis techniques are applied to typical thermistor sensor stage circuits wherein the operation of the thermistor is defined by its static voltage-current characteristic. It is shown that the thermistor small-signal analysis, as based on the application of a thermistor small-signal equivalent circuit, and the large-signal analysis, as accomplished by graphical techniques, are completely compatible with their respective counterparts in vacuum tube analysis. As an illustrative example, a thermal conductivity gas analyzer is designed and experimentally evaluated against its theoretical performance as predicted by large-signal analysis. Excellent agreement is shown. A portion of the total range of the gas analyzer is then chosen such as to be in keeping with the constraints imposed on the use of the small-signal equivalent circuit and, again, it is shown that the theoretical response is experimentally verified. View full abstract»

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  • The response of an automatic phase control system to FM signals and noise

    Publication Year: 1963 , Page(s): 1306 - 1316
    Cited by:  Papers (6)
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    An Automatic Phase Control (APC) System is analyzed in order to determine its response to frequency modulated signals, and narrow-band Gaussian noise. Emphasis is placed on the system's response to signals having "ramp" type FM. The response of the APC System to an FM signal is obtained using a perturbation and a piecewise linear technique. The response of the system to noise is obtained using an iteration technique. The complete response to an FM signal and noise is then discussed using an iteration technique and extending the results previously obtained. View full abstract»

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  • An optimum demodulator for poisson processes: Photon source detectors

    Publication Year: 1963 , Page(s): 1316 - 1320
    Cited by:  Papers (39)
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    The optimum demodulator for time-varying Poisson processes is derived from consideration of the likelihood ratio. In the case of high background level radiation, it has been found that the optimum signal processing is cross-correlation. Under an average energy constraint and conditions of high background radiation, an optimum binary signaling method is "on-off" modulation. For both binary signaling and radar purposes, the "on" waveform should be a narrow pulse in order to maximize the "signal-to-noise" ratio. View full abstract»

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  • Characteristics of titanium electrolytic capacitors

    Publication Year: 1963 , Page(s): 1320 - 1327
    Cited by:  Papers (2)
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    Properties of titanium electrolytic capacitors produced by a newly developed oxidation process are described. Molten-salt electrolytes were utilized in the formation of the titanium oxide film. The characteristics of the titanium electrolytic capacitors are very similar to those of tantalum electrolytic capacitors except that the leakage current is somewhat larger. The results of life tests made on the titanium capacitors are presented. View full abstract»

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  • Detection range prediction for infrared detection systems

    Publication Year: 1963 , Page(s): 1327 - 1336
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    A mathematical model from which detection range may be predicted is developed. The model is specific to systems that base detection upon the exceeding of a threshold voltage by signal plus noise voltage. It is not restricted to a particular electromagnetic wavelength region. The model is applied to a passive infrared detection system. Normalized detection range is given in graphical form as a function of a wide range of values of normalized closure between scans, normalized range at initiation of scan, false alarm rate parameter, and degree of target scintillation, for probabilities of detection of 0.9, 0.7 and 0.5. Specification of the characteristics of a particular system-target-environment complex will allow rapid calculation of detection range for a prescribed probability of detection. View full abstract»

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  • Natural electromagnetic field fluctuations in the 3.0- to 0.02-cps range

    Publication Year: 1963 , Page(s): 1337 - 1342
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    Using large loop antennas the ultra-low-frequency research group at the National Bureau of Standards has studied the upper atmosphere phenomena of geomagnetic micropulsations. Data taken at a number of world stations on both direct reading chart and magnetic tape indicate a division into three contributing phenomena for the frequency range of 3.0 to 0.02 cps. Very regular oscillations of 2.0 to 0.2 cps are a strange pulsation phenomenon most likely of outer atmospheric origin but apparently unrelated to solar-terrestrial disturbances. Sudden bursts of large amplitude field fluctuations spread throughout the frequency range are closely related to high latitude particle precipitation, enhanced ionospheric absorption, and auroral luminosity; these fluctuations seem to be of ionospheric origin. Regular oscillations between 0.2 and 0.03 cps appearing over broad sections of the earth with related phase on days of high solar-terrestrial activity are presently the best candidate for magneto-hydrodynamic interpretation. During the International Quiet Sun Year (IQSY) a configuration of world stations will be operated along a latitudinal line covering about 180° at three sites in the boreal auroral zone, along a longitudinal line near 75° to 80°W longitude with conjugate stations corresponding to L shell values of about 6.5 and 4, and at an equatorial site. View full abstract»

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  • Dispersion relations in time-space periodic media: Part I—Stable interactions

    Publication Year: 1963 , Page(s): 1342 - 1359
    Cited by:  Papers (16)
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    Complete dispersion characteristics are exhibited for electromagnetic waves propagating in a time-space periodically-modulated medium which is all-pass and dispersionless in the absence of the (pump) modulation. A rigorous solution, including all of the infinite number of time-space harmonics, is obtained for the linearized model, which also is representative of a traveling-wave parametric circuit. In contrast with previous work relating to traveling-wave parametric circuits, however, no assumptions are imposed on the present model regarding mode coupling. The dispersion relation is represented graphically in a form which is a generalization of the familiar one-dimensional Brillouin diagram for stationary periodic structures. From the repeated cell pattern one ascertains that for this medium only two types of interaction are possible, 1) stable interactions, of the stop-band type, associated with frequency conversion effects and 2) potentially unstable interactions, characterized by a stop band in wavenumber rather than in frequency. These types of interaction occur, respectively, when the phase velocity of the pump modulation is less than or greater than that of a signal in the unmodulated medium. Separating these two types of interaction is a "sonic" region, which appears whenever these two phase velocities are approximately equal The characteristics of the stable interactions and the sonic region are discussed in the present paper; the unstable interactions are considered in Part II (to be published at a later date). The amplitudes of several of the time-space harmonics have also been calculated and are shown to satisfy the Manley-Rowe relations in the stop bands; of particular interest is the role of the minor harmonics and the error introduced by using only two harmonics, as in coupled-mode theory. View full abstract»

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  • Tunnel diode-cryotron circuit for interrogation of cryotronic systems

    Publication Year: 1963 , Page(s): 1359 - 1360
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  • Rocket antenna voltage breakdown induced by firing explosive bolts

    Publication Year: 1963 , Page(s): 1360
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  • Comment on "A method for calibration of laser energy output"

    Publication Year: 1963 , Page(s): 1360
    Cited by:  Papers (2)
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  • Engineering images

    Publication Year: 1963 , Page(s): 1360 - 1361
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  • Long-distance light propagation

    Publication Year: 1963 , Page(s): 1361
    Cited by:  Papers (1)
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  • Omission in fuel cell technology paper

    Publication Year: 1963 , Page(s): 1361
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  • P-N junctions in lead telluride

    Publication Year: 1963 , Page(s): 1362 - 1363
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  • Scattering of optical pulses from a nonequilibrium plasma

    Publication Year: 1963 , Page(s): 1362
    Cited by:  Papers (1)
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  • A crossed-field gun

    Publication Year: 1963 , Page(s): 1363 - 1364
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  • An optical absorption filter utilizing Kerr effect dispersion

    Publication Year: 1963 , Page(s): 1364 - 1365
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  • Injection electroluminescence in silicon

    Publication Year: 1963 , Page(s): 1365
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  • S-band nondegenerative parametric amplifier with 1000-Mc instantaneous bandwidth

    Publication Year: 1963 , Page(s): 1365 - 1366
    Cited by:  Papers (3)
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Editor-in-Chief
H. Joel Trussell
North Carolina State University