IRE Transactions on Antennas and Propagation

Volume 7 Issue 4 • October 1959

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Displaying Results 1 - 24 of 24
  • [Front cover and table of contents]

    Publication Year: 1959, Page(s): 0
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  • Leaky-wave antennas I: Rectangular waveguides

    Publication Year: 1959, Page(s):307 - 319
    Cited by:  Papers (126)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1120 KB)

    A microwave network approach is employed for the description and analysis of leaky-wave antennas. This approach is based on a transverse resonance procedure which yields the complex propagation constants for the leaky waves. A perturbation technique is then applied to the resonance equation to obtain results in simple and practical form. These procedures are illustrated by application to a number ... View full abstract»

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  • A flush-mounted leaky-wave antenna with predictable patterns

    Publication Year: 1959, Page(s):320 - 329
    Cited by:  Papers (41)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1008 KB)

    This paper describes the design and the measured performance of a large, flat antenna consisting of an inductive grid spaced over a conducting surface. The analysis employs the transverse-resonance method to determine the radiating properties of the structure. This analytical technique is shown to predict very accurately the amplitude and phase of the illumination along the aperture of the antenna... View full abstract»

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  • The unidirectional equiangular spiral antenna

    Publication Year: 1959, Page(s):329 - 334
    Cited by:  Papers (63)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (594 KB)

    Circularly polarized unidirectional radiation, over a bandwidth which is at the discretion of the designer, is obtainable with a single antenna. The antenna is constructed by wrapping balanced equiangular spiral arms on a conical surface. The non-planar structure retains the frequency-independent qualifies of the planar models, and, in addition, provides a single lobe radiation pattern off the ape... View full abstract»

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  • Closely-spaced transverse slots in rectangular waveguide

    Publication Year: 1959, Page(s):335 - 342
    Cited by:  Papers (22)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (645 KB)

    The traveling-wave modes associated with an infinite, periodic structure are considered. An approximate equation for the propagation constants of these modes is derived through the use of Fourier analysis and an approximate application of the reaction concept. In the homogeneous case considered, it is found that two dominant modes may exist: an attenuated fundamental mode representing a perturbati... View full abstract»

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  • Generalizations of spherically symmetric lenses

    Publication Year: 1959, Page(s):342 - 345
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (314 KB)

    The purpose of this paper is to generalize the solutions of some spherically symmetric lens and lens-reflector problems recently treated by Kay. The original problem was to find a variable-index structure, with a point source at its surface or at infinity, which would produce a beam of finite angular width, having a prescribed variation of intensity with angle. It is shown that a prescribed exit b... View full abstract»

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  • Radiation properties of a thin wire loop antenna embedded in a spherical medium

    Publication Year: 1959, Page(s):345 - 352
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    Formulas for certain radiation properties of a spherical antenna are derived theoretically. The antenna, which consists of a spherical medium, such as ferrite, with a thin wire loop embedded just below the surface in an equatorial plane, is driven by a slice generator. For the spherical medium, the permeabilityK_{m}and the dielectric constantK_{e}are assumed to be scalars and... View full abstract»

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  • The conductance of dipoles of arbitrary size and shape

    Publication Year: 1959, Page(s):353 - 358
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (485 KB)

    The real part of either the impedance or the admittance of dipoles of arbitrary size and shape can be computed rigorously without solving a boundary value problem of a partial differential equation. In analogy to a well-known method of potential theory, fields of standing waves can be generated by integrals over current filaments so that for a given frequency there exist dipole shaped surfaces nor... View full abstract»

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  • The launching of surface waves by a parallel plate waveguide

    Publication Year: 1959, Page(s):359 - 368
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (738 KB)

    The excitation of the lowest TM surface wave in grounded dielectric slab by a terminated parallel plate waveguide is discussed. The ground plane is the continuation of the lower plate of the waveguide and the infinite dielectric slab is partially filling the waveguide. The thickness of the slab, the height of the parallel plate waveguide, and the frequency are such that only the lowest slow wave c... View full abstract»

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  • Random errors in aperture distributions

    Publication Year: 1959, Page(s):369 - 372
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (326 KB)

    The effects of random manufacturing errors on polar diagrams of antennas are analyzed in terms of the radius of correlation and mean square magnitude of the errors. The basis of the method is the Wiener-Khintchine theorem. Approximate general formulas are given for the reduction in gain and lowest probable sidelobe level. The implications of the theory are discussed. View full abstract»

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  • Successive variational approximations of impedance parameters in a coupled antenna system

    Publication Year: 1959, Page(s):373 - 379
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (627 KB)

    In this paper, a new variational formulation for a single impedance parameter of anm-antenna system is presented. This formulation enables one to determine any self impedanceZ_{ii}, one at a time, merely by exciting antennaialone and leaving all the other antennas open circuited. For determining any mutual impedanceZ_{ij}, only two independent excitation... View full abstract»

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  • A new method for obtaining maximum gain from yagi antennas

    Publication Year: 1959, Page(s):379 - 386
    Cited by:  Papers (60)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (748 KB)

    In conventional Yagi design, optimum performance requires separate adjustments in a number of parameters-the array length and the height, diameter, and spacing of the directors and reflectors. By introducing the notion of a surface wave traveling along the array, it is possible to demonstrate experimentally the interrelationship between these parameters. With this, the gain then depends only on th... View full abstract»

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  • A dipole antenna coupled electromagnetically to a two-wire transmission line

    Publication Year: 1959, Page(s):386 - 392
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (769 KB)

    The properties of a dipole antenna coupled electromagnetically to a two-wire transmission line are studied experimentally. It is found that the coupling of the antenna to the transmission line can be maximized by a proper choice of 1) the angular position of the antenna with respect to the transmission line, 2) the length of the antenna, and 3) the separation of the antenna from the transmission l... View full abstract»

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  • An ionospheric ray-tracing technique and its application to a problem in a long-distance radio propagation

    Publication Year: 1959, Page(s):393 - 396
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (395 KB)

    A method is given for the determination of the equation of a ray path in a known ionosphere where there axe no horizontal gradients. It can partially take into account the effects of the magnetic field of the earth. The method was applied to an oblique path between Ottawa and Slough (5300 km) to determine certain properties of the one-hop mode. From this it is shown that at times one hop direct ra... View full abstract»

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  • The effect of multipath distortion on the choice of operating frequencies for high-frequency communication circuits

    Publication Year: 1959, Page(s):397 - 404
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (741 KB)

    Harmful multipath distortion on high-frequency facsimile services and telegraphic services operating at high speeds occurs when the received signal is composed of two or more components arriving by different modes over the same great-circle path with comparable intensities, but having travel times which differ by an amount equal to an appreciable fraction of the duration of a signal element. The d... View full abstract»

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  • Analysis of 3-cm radio height-gain curves taken over rough terrain

    Publication Year: 1959, Page(s):405 - 413
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    This report describes the effect of terrain and meteorological conditions on the height-gain pattern of 3.2-cm radio waves over various short transmission paths. Equivalent reflection coefficients are obtained and potential reflection areas are investigated. A study of the time variations in the height of nulls in the signal strength pattern is made and the relationship between movement of the nul... View full abstract»

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  • Electron densities of the ionosphere utilizing high-altitude rockets

    Publication Year: 1959, Page(s):414 - 418
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    The problem of determining the electron densities in theE-region of the ionosphere is approached by using 6-mc pulse transmissions from a rocket to several ground receiving stations. A logical and complete development, using dyadic techniques, is given for obtaining the propagation constant of the dissipative, anisotropic ionosphere. Special cases of the magneto-ionic formulas are given... View full abstract»

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  • A scatter propagation experiment using an array of six paraboloids

    Publication Year: 1959, Page(s):419 - 428
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1002 KB)

    Using an antenna system whose aperture could be varied in four-foot steps between 4 and 24 feet, aperture-to-medium coupling loss measurements have been made on a 2720-msec, 216- mile path. These measurements reveal an intrinsic variability in the scattering mechanism which is not accounted for in most current theories. Diversity and fading-rate measurements were also made. A simple mathematical m... View full abstract»

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  • Sweep-frequency studies in beyond-the-horizon propagation

    Publication Year: 1959, Page(s):428 - 433
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (737 KB)

    This paper considers the bandwidth characteristics of the propagating medium in tropospheric beyond-the-horizon propagation. To study this problem, a frequency-sweep experiment was performed over a 171-mile experimental circuit. A 4.11-kmc transmitter was frequency modulated at a 1000-cps rate over a 20-mc band. The receiver was swept nonsynchronously over the same band at a 30-cps rate. The resul... View full abstract»

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  • Geometrical optics approximation of near-field back scattering

    Publication Year: 1959, Page(s):434 - 435
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  • Scanning antenna arrays of discrete elements

    Publication Year: 1959, Page(s):435 - 436
    Cited by:  Papers (4)
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  • On the use of uniform circular arrays to obtain omnidirectional patterns

    Publication Year: 1959, Page(s):436 - 438
    Cited by:  Papers (13)
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  • Status of tropospheric extended range transmission

    Publication Year: 1959, Page(s):439 - 440
    Cited by:  Papers (1)
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  • Contributors and back cover

    Publication Year: 1959, Page(s): c4
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Aims & Scope

The Transactions ceased publication in 1962. The current retitled publication is IEEE Transactions on Antennas and Propagation.

Full Aims & Scope