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Proceedings of the IEEE

Issue 1 • Date Jan. 1968

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Displaying Results 1 - 25 of 74
  • [Front cover and table of contents]

    Publication Year: 1968, Page(s): c1
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1968, Page(s): 1
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    Freely Available from IEEE
  • Distortion and crosstalk of linearly filtered, angle-modulated signals

    Publication Year: 1968, Page(s):2 - 13
    Cited by:  Papers (59)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1039 KB)

    An important problem in the theory and practice of receiving angle-modulated signals is the design of the filtering elements which must be employed. It has long been known that filtering introduces distortion and crosstalk into the signal. However, the computation of these effects is difficult. The methods customarily used employ approximations of one kind or another, and the equations used do not... View full abstract»

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  • Small-signal behavior of nonlinear lumped networks

    Publication Year: 1968, Page(s):14 - 22
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (753 KB)

    This paper develops two theorems concerning the small-signal behavior of nonlinear time-varying networks whose state equations are of the form x·= f(x, u, t). The conclusions of the theorems are supported by experiments. The input is of the form U(t) + u(t), where the bias U(t) is allowed to be time-varying (typically, slowly varying) and u(t) is the small signal. The bias induces ... View full abstract»

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  • Standing spin waves in ferromagnetic thin films

    Publication Year: 1968, Page(s):23 - 31
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (733 KB)

    A theory of spin wave resonance in ferromagnetic thin films is discussed in a manner that permits a computation of the real and imaginary parts of the circularly polarized RF fields as well as the power absorption spectrum. The case of the dc field intensity applied normal to the surface of the film is considered, and the saturation magnetization is taken as constant throughout the body of the fil... View full abstract»

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  • Thermal annealing of proton-irradiated silicon solar cells

    Publication Year: 1968, Page(s):31 - 37
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (691 KB)

    Solar cells made from 1.5- and 10-Ωċcm p-type silicon, with silver-titanium evaporated electrodes, were irradiated by 4.6-MeV protons at room temperature to fluences ranging from 1 × 1010to 1 × 1012protons/cm2. The photovoltaic current-voltage characteristics, the photovoltaic spectral response, and the minority carrier diffusion length were stu... View full abstract»

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  • Infrared heterodyne detection

    Publication Year: 1968, Page(s):37 - 46
    Cited by:  Papers (71)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2140 KB)

    Heterodyne experiments have been performed in the middle infrared region of the electromagnetic spectrum using the CO2laser as a radiation source. Theoretically optimum operation has been achieved at kHz heterodyne frequencies using photoconductive Ge:Cu detectors operated at 4°K, and at kHz and MHz frequencies using Pb1-xSnxSe photovoltaic detectors at 77... View full abstract»

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  • Transmission line pulse transformers—Theory and applications

    Publication Year: 1968, Page(s):47 - 62
    Cited by:  Papers (14)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3274 KB)

    The advent of fast rise-time pulse techniques and their increasing importance brought on by high-speed microminiature circuits and the computer industry has resulted in an increased demand for pulse transformers of various types. The basic idea of constructing transmission line type transformers has been known and used for a number of years. However, such devices have not gained widespread usage, ... View full abstract»

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  • Maximally flat approximation techniques

    Publication Year: 1968, Page(s):65 - 66
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (217 KB)

    Design procedures are developed for the Taylor approximation of prescribed network characteristics in the neighborhood of an arbitrary frequency. The desired characteristic may represent either the phase, or the loss, or both. View full abstract»

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  • Uniform distributed amplifier analysis with fast and slow waves

    Publication Year: 1968, Page(s):66 - 67
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (198 KB)

    A uniform distributed amplifier with passive and active, but no inductive, coupling can be represented in most practical cases with an exact distributed equivalent circuit consisting of simple fast and slow mode transmission lines having equal terminators. With ohmic terminators, reflected backward waves always exist (f ≠ ∞). View full abstract»

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  • Rectifying contacts under evaporated CdS

    Publication Year: 1968, Page(s): 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (246 KB)

    Previously, formation of blocking contacts to evaporated CdS with high work function metals has depended on the order of deposition. A method is described whereby blocking contact, rather than the usual ohmic contact, results for CdS deposited on metal. Comparison is favorable with the best diodes obtained by first depositing CdS. View full abstract»

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  • Scintillation reduction of a focused laser beam in a turbulent wind tunnel

    Publication Year: 1968, Page(s):69 - 71
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Theoretical reduction in intensity fluctuations of a focused laser beam propagating through a randomly inhomogeneous medium was qualitatively examined in an experiment in which intensity fluctuations were observed near the focus of the optical system used. A wind tunnel was used to produce the randomly inhomogeneous medium. View full abstract»

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  • On the compensation of the nonideal NIC

    Publication Year: 1968, Page(s): 69
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (97 KB)

    This letter shows that the criteria for a two-port to be a nonideal NIC in terms of its h parameters should be applied to both orientations of the two-port. Alternatively, a different set of conditions should be used if the two-port is to remain in the same orientation. View full abstract»

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  • Immittance transformation chart of a two-port

    Publication Year: 1968, Page(s):71 - 72
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    The immittance transformation chart of a two-port which is used together with the Smith chart to obtain graphically the immittance transformed through a two-port is presented. View full abstract»

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  • A discussion of an auxiliary matrix

    Publication Year: 1968, Page(s):72 - 73
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (190 KB)

    An auxiliary matrix found in the literature provides a convenient way of evaluating an equidiagonal symmetric matrix such as that encountered in the tree count for a complete simple graph. The generalized form of this matrix is analyzed and several suggested uses are presented. View full abstract»

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  • Intermodulation products generated by a p-i-n diode switch

    Publication Year: 1968, Page(s):74 - 75
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (155 KB)

    Values are reported for the odd-order intermodulation products originating from a p-i-n diode in a UHF SPST switch which is tied to a transmission line carrying two signals. Included are their dependence on power levels, bias, and ambient temperature. View full abstract»

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  • Calculation of LSA oscillator noise

    Publication Year: 1968, Page(s):75 - 77
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (258 KB)

    FM noise of the LSA oscillator diode has been investigated in the case where there are density fluctuations between two sub-bands. If the differential mobility is a positive constant below a threshold field and a negative one above it, the power spectrum of the noise may be proportional to that of the density fluctuations. View full abstract»

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  • High-current triode with nonintercepting control electrode

    Publication Year: 1968, Page(s):77 - 78
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    A novel triode configuration suitable for high-density electron guns is described in which several insulated posts project through holes in the cathode surface. Results of a pilot high-power, pulsed-voltage experiment are given. View full abstract»

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  • Time-varying circuits for noise measurement

    Publication Year: 1968, Page(s):78 - 79
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (226 KB)

    A time-varying smoothing network with an increasing time constant provides good smoothing and fast initial response. A mathematical model evaluated by digital computer showed that a stepwise time constant increase gives fairly good results even with only two steps. For low-output detectors (e.g., Hall correlators) a continuously varying time constant may be realized by using an FET. View full abstract»

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  • Effect of neglecting Hall term on dispersion relation for hydromagnetic waves

    Publication Year: 1968, Page(s):79 - 80
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (218 KB)

    The Hall term in the generalized Ohm's law is sometimes neglected in analysis of hydromagnetic waves. Some misleading results which arise from neglect of this term are discussed. View full abstract»

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  • Cycle-slipping effects on the output signal of a phase-locked demodulator

    Publication Year: 1968, Page(s):80 - 81
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (437 KB)

    Experimental results are presented to show the energy distribution of the output signal of a phase-locked loop when used as an FM demodulator. This effect is related to the cycle-slipping phenomena and the modeling of equivalent circuits. View full abstract»

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  • Simultaneous oscillations at two frequencies in RLC circuits

    Publication Year: 1968, Page(s):82 - 83
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (165 KB)

    It is shown under which conditions two parallel high-Q resonance RLC circuits connected in series to a voltage-controlled active device, described by an instantaneous characteristic of fifth degree, can oscillate simultaneously at two frequencies. View full abstract»

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  • Moments of complex Gaussian processes

    Publication Year: 1968, Page(s):83 - 84
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (158 KB)

    It is shown that the same formula used for calculating the moments of a real multivariate Gaussian process may be used to calculate the moments of a complex Gaussian process. This is a slight generalization of a result of Reed. The method of proof is simple, elegant, and self-contained. View full abstract»

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  • A fast controlled monostable circuit using tunnel diodes

    Publication Year: 1968, Page(s):84 - 85
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (334 KB)

    A circuit is developed for the identification of random events of single and paired pulses. The output pulse length of this "controlled monostable" circuit is proportional to the time interval of the paired pulses and the response to a single pulse is in the monostable mode. View full abstract»

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  • Comment on "Energy-transport velocity in electromagnetic waves"

    Publication Year: 1968, Page(s):85 - 86
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H. Joel Trussell
North Carolina State University