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Proceedings of the IEEE

Issue 11 • Nov. 1963

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Displaying Results 1 - 25 of 79
  • [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): 1399
    Cited by:  Papers (1)
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  • Frontispiece

    Publication Year: 1963, Page(s): 1400
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1963, Page(s):1401 - 1402
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    Freely Available from IEEE
  • Preface to special international issue

    Publication Year: 1963, Page(s): 1403
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  • IEEE—A non-national society

    Publication Year: 1963, Page(s):1404 - 1405
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  • URSI: The international scientific radio union

    Publication Year: 1963, Page(s):1406 - 1407
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    The International Scientific Radio Union originated in a small meeting in Brussels in 1913; thus, it was celebrating its Golden Jubilee, or 50th anniversary, at its XIVth General Assembly in Tokyo in September, 1963. The following paper presents a very brief history of the URSI, with an account of its scientific objectives and its activities in relation to other scientific and technical bodies in ... View full abstract»

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  • Light waves mixing in nonlinear anisotropic media

    Publication Year: 1963, Page(s):1408 - 1411
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (313 KB)

    A recent method for the solution of problems at the boundary of nonlinear electromagnetic media is extended to the anisotropic case for the purpose of studying the mixing between two strong electromagnetic waves in crystals. The general solution for the wave at the beat frequency is first derived for an unbounded medium on the hypothesis of weak harmonic generation. The boundary conditions at the ... View full abstract»

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  • The detection of sub-mm radiation

    Publication Year: 1963, Page(s):1412 - 1423
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1085 KB)

    The characteristics of an ideal detector are discussed and are compared with the practical results achieved with the following types of detectors: superheterodyne and video receivers using point-contact rectifiers; InSb photoconductive detectors, both wide-band and tunable; thermal detectors, including the Golay cell, and carbon, germanium and superconducting tin bolometers. The practical performa... View full abstract»

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  • Experimental research on the behavior of passive repeaters

    Publication Year: 1963, Page(s):1423 - 1430
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2063 KB)

    The behavior of passive repeaters in microwave radio links has been focused by means of a series of experimental tests. Some of the measurements were concerned with the determination of quantities which characterize the behavior of the repeater alone and in connection with the whole radio link. Some other measurements were planned to investigate closely the behavior of the mirror and the anomalies... View full abstract»

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  • An antenna illuminated by a cavity resonator

    Publication Year: 1963, Page(s):1431 - 1435
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    A microwave aperture antenna with small phase errors has been constructed by utilizing the plane field configuration inside a box-shaped resonator to directly excite the aperture, which is the same shape as the resonator. The antenna is narrow band, as Q of the resonator should be sufficient for selecting the proper mode in the resonator. The possible bandwidth of the antenna is thus inverse propo... View full abstract»

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  • TE- and TM-waves in waveguides of very general cross section

    Publication Year: 1963, Page(s):1436 - 1443
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    The waveguide of the general cross section is transformed into a waveguide of rectangular cross section by conformal transformation. The electric and magnetic field, the critical frequency, wall current, power transport and attenuation of the different TE-and TM-modes are calculated by a series approximation. Examples of numerical evaluation are given for five different cross sections. View full abstract»

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  • A Smith-diagram display unit of small reflection coefficients using the vibrating-dummy method

    Publication Year: 1963, Page(s):1444 - 1454
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3026 KB)

    A broad-band Smith-diagram display unit has been developed by using a new waveguide circuit called a phase-directional coupler. Among the interesting features of this new display unit are its broad-band capabilities, high precision and simple construction. A "vibrating-dummy method" has been developed as a perfect termination in contrast with the well-known "sliding-load method." The Smith-diagram... View full abstract»

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  • Diffraction of a cylindrical surface wave by a discontinuity in surface reactance

    Publication Year: 1963, Page(s):1455 - 1463
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (525 KB)

    This scattering problem is essentially two-dimensional due to the circular symmetry of the incident TM mode, and is solved exactly by the Wiener-Hopf technique. As stated, the incident wave is the symmetrical TM axial surface wave, traveling in the positive x direction and guided by a reactive surface at r = a. The normal surface reactance is X1for x < 0 and X2for x > 0... View full abstract»

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  • Radio astronomy with the Australian 210-foot telescope

    Publication Year: 1963, Page(s):1464 - 1470
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3094 KB)

    Major research was begun in March, 1962, with the 210-foot steerable radio telescope at the Australian National Radio Observatory. Current and planned investigations are numerous and diverse, and include observations at wavelengths of 11, 21, 30, 75 and 220 cm. This paper sketches the telescope and equipment details and describes the research program, including results to date. View full abstract»

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  • Solar corpuscular activity and ionization density in the F2 layer of the ionosphere

    Publication Year: 1963, Page(s):1471 - 1474
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (330 KB)

    It is suggested that the ionization in the F2 region of the ionosphere is composed of contributions due to electromagnetic ultraviolet and corpuscular radiations from the sun. These two components of solar energy can be represented by sunspot and geomagnetic activity. When contributions from both these components are taken into account, the monthly mean value of the averaged diurnal characteristic... View full abstract»

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  • Ionosphere dynamics

    Publication Year: 1963, Page(s):1475 - 1481
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (909 KB)

    Early studies of the ionosphere assumed that isoionic surfaces were substantially horizontal and smooth, and diurnal, seasonal and sunspot variations were worked out on that basis. In recent years, the attention of research workers has turned more and more to the study of irregularities and movements in ionization. Irregularities examined range in size from the order of hundreds of kilometers to t... View full abstract»

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  • An approach to tropospheric duct propagation

    Publication Year: 1963, Page(s):1481 - 1486
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (514 KB)

    A modal solution for the em propagation in a spherical stratified troposphere is derived, via the Marcuvitz-Schwinger formalism. The approximations due to the small curvature of the earth are illustrated. The representation of the sources via the complete set of modal solutions is presented, as well as the excitation factors, computed for the vertical electric or magnetic dipole. The possible use ... View full abstract»

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  • Some observations on VLF standard frequency transmissions as received at Sydney, N. S. W.

    Publication Year: 1963, Page(s):1487 - 1493
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1301 KB)

    The phase and amplitude of standard frequency transmissions from G.B.R. (16 kc) and N.B.A. (18 kc) are recorded continuously by comparison with a local standard. Equipment developed for this purpose is described briefly and includes a novel digital gear box used to correct the local standard. Diurnal phase variations throughout the year are shown for both stations. Over a 24-hour interval frequenc... View full abstract»

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  • Spring thunderstorms over Bangalore

    Publication Year: 1963, Page(s):1493 - 1501
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    A study of the flashing characteristics of thunderstorms can provide useful information of scientific interest and application value if all types of flashes could be recorded with equal satisfaction. One way of realizing this requirement is by utilizing the now known experimental result that all types of flashes are equally effective in radiating HF noise. This paper describes a technique based on... View full abstract»

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  • A transistorized radiation-field-actuated lightning flash counter

    Publication Year: 1963, Page(s):1501 - 1506
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (737 KB)

    Lightning discharges are known to occur within the cloud, from cloud to air, from the cloud to ground and between clouds. In the studies of atmospheric radio noise and characteristics of thunderstorms, an instrument is required for recording all the types of lightning flashes mentioned. The paper describes such an instrument and its tropicalized enclosure. The instrument is an extension of the Aiy... View full abstract»

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  • An experimental study of the possible bandwidth compression of visual image signals

    Publication Year: 1963, Page(s):1507 - 1517
    Cited by:  Papers (25)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4490 KB)

    It is a fact that the eyes are used far less often than the ears in telecommunication systems. The obvious reason for this is that an adequate signal can usually be obtained in aural communication channels with relatively little data, but in contrast the eyes are considered to require a very great deal of data in order to receive an adequate signal. There may be very many industrial applications o... View full abstract»

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  • Automatic picture detail detection in the presence of random noise

    Publication Year: 1963, Page(s):1518 - 1523
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    This paper is intended to be a companion to the paper in this issue by Cherry, et al., entitled "An Experimental Study of the Possible Bandwidth Compression of Visual Image Signals." It concerns particularly that part of the visual signal compression process carried out by the "picture detail detector." The purpose of this detector is to make a continuous running examination of a scanned video sig... View full abstract»

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  • A unity bit coding method by negative feedback

    Publication Year: 1963, Page(s):1524 - 1535
    Cited by:  Papers (112)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3592 KB)

    Signal-to-noise performances of a unity bit coding method and the characteristics of an experimental video encoder based upon the principle are described. The system contains a signal integration process in addition to the original delta modulator and features capability of transmitting dc component of input signal. The characteristics of the quantizing noise to the signal frequency, the signal am... View full abstract»

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  • A cylindrical coding tube for 8-digit code

    Publication Year: 1963, Page(s):1536 - 1541
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1171 KB)

    The cylindrical coding tube discussed in this paper has been designed for converting a sampled analog signal into a digital signal of reflected binary (Gray) code. The physical principle of the tube is one of electron-optical image formation in a coaxially symmetrical electric field, similar to 45°-focusing in a homogeneous field. This principle leads to a minimum of image errors. The voltage... View full abstract»

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H. Joel Trussell
North Carolina State University