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IRE Transactions on Antennas and Propagation

Issue 1 • January 1958

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Displaying Results 1 - 25 of 28
  • [Front cover and table of contents]

    Publication Year: 1958, Page(s): 0
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    Freely Available from IEEE
  • News and views

    Publication Year: 1958, Page(s):1 - 2
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    Freely Available from IEEE
  • An analytical study of scattering by thin dielectric rings

    Publication Year: 1958, Page(s):3 - 8
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    An analysis of the scattering effect of a thin dielectric ring on an electromagnetic field is developed under two assumptions: the incident field is the free space field of the source, and the scattered field tends asymptotically to zero as the radial thickness of the ring approaches zero. When an integral equation of Barrar and Dolph, derived directly from Maxwell's equations, is employed, a form... View full abstract»

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  • Theoretical investigation of the radiation characteristics of a quasi-flush-mounted cardioid-pattern antenna

    Publication Year: 1958, Page(s):8 - 12
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (451 KB)

    This paper determines the radiation characteristics of a semi-flush-mounted cardioid-pattarn antenna on a theoretical basis. The antenna is similar to one described by Clapp in a report of the Electronic Research Laboratory of the University of California. By judicious use of image theory in a radial transmission line formed by extending the antenna surfaces to infinity, the approximate fields of ... View full abstract»

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  • On the propagation of surface waves over an infinite grounded ferrite slab

    Publication Year: 1958, Page(s):13 - 20
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (499 KB)

    A theoretical study is made of the propagation of surface waves along an infinite plane conductor coated with a layer of ferrite material subjected to a constant external magnetic field. For three directions of the external field, the electric and magnetic fields are computed for the separate media, and the relations between them arising from boundary conditions are expressed as transcendental equ... View full abstract»

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  • Polarization fading over an oblique incidence path

    Publication Year: 1958, Page(s):21 - 25
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (685 KB)

    This paper discusses the results of an investigation of polarization fading conducted over a one-hop F2 layer path from eastern Massachusetts approximately 1000 miles westward. Continuous recordings of pulse transmissions were made to study the instantaneous variations in amplitude of the vertically and horizontally polarized components of the received signal. Results are presented which show a st... View full abstract»

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  • A two-dimensional slotted array

    Publication Year: 1958, Page(s):26 - 35
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1465 KB)

    A two-dimensional slotted array of which the radiating surface is one face of a parallel-plate region is discussed, This configuration differs from others previously reported in that a higher mode is utilized in the parallel-plate region. The array is equivalent thereby to a number of slotted waveguides parallel to each other. The stability of the desired mode requires that the array amplitude be ... View full abstract»

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  • Shunt and notch-fed HF aircraft antennas

    Publication Year: 1958, Page(s):35 - 43
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (935 KB)

    In the hf range radiation from aircraft must be accomplished by exciting radiating currents on the airframe itself. One method of exciting such currents is by shunts or notches which electrically penetrate the airframe. The strength of coupling of such devices is analyzed and shown to be proportional to the square of the normal mode current which they interrupt. A theory is developed and substanti... View full abstract»

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  • On the fresnel approximation

    Publication Year: 1958, Page(s):43 - 48
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    The purpose of this paper is to show the power of the Sommerfeld expansion in computing Fresnel and near fields of antennas, a matter which has become of increasing importance in high resolution antennas. A connection is shown between the Fresnel and Fraunhofer approximations for radiation fields which is derived by using Sommerfeld's expansion of the field in inverse powers of radial distance. Th... View full abstract»

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  • The approximate parameters of slot lines and their complement

    Publication Year: 1958, Page(s):49 - 55
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    An approximate attenuation coefficient due to ohmic loss is derived for both parallel slots and parallel strip lines. The capacitance per unit length, as well as the inductance per unit length of the lines are also obtained. The properties of a transmission line immersed in a lossless dielectric are thus completely determined. The attenuation coefficient due to lossy dielectric may be approximated... View full abstract»

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  • Propagation of electromagnetic pulses around the earth

    Publication Year: 1958, Page(s):56 - 61
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (461 KB)

    The propagation of electromagnetic pulses around the earth is investigated analytically. The pulses are assumed to be produced by a vertical electric or magnetic dipole. The earth is treated as a homogeneous sphere of either finite or infinite conductivity and the atmosphere is assumed to be homogeneous. It is found that very short pulses become longer the further they propagate, in addition to di... View full abstract»

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  • Scattering of electromagnetic waves in beyond-the-horizon radio transmission

    Publication Year: 1958, Page(s):61 - 65
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    A formula is developed for the cross section in electromagnetic wave propagation beyond the horizon. The theory assumes that the propagation is the result of scattering by ellipsoidal shaped inhomogeneities in the atmosphere causing variations in the dielectric constant. The method of derivation is straightforward and gives a clear physical picture of the nature of the process. Simplifications con... View full abstract»

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  • Radio echoes from auroral ionization detected at relatively low geomagnetic latitudes

    Publication Year: 1958, Page(s):65 - 79
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1813 KB)

    High-frequency radio echoes from ionization associated with the Aurora Borealis have been identified at Stanford University (geomagnetic latitude 43.75\deg ). The echoes occur at ranges between 1400 km and 4700 km corresponding to reflection from ionization in the zone of maximum auroral occurrence located far to the north of Stanford. The formation of the i... View full abstract»

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  • The geometry of auroral communications

    Publication Year: 1958, Page(s):80 - 87
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (602 KB)

    As early as 1939, radio amateurs found auroral ionization useful for communication purposes. Such ionization makes hf and vhf propagation possible over paths as great as several hundred kilometers when other more normal ionospheric propagation modes do not exist. The geometry of reflection is investigated for a variety of transmitter locations based upon the assumption of specular reflection from ... View full abstract»

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  • A statistical model for foward scattering of waves off a rough surface

    Publication Year: 1958, Page(s):88 - 94
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (586 KB)

    Using methods of physical optics, a statistical description of the scattering of waves off a rough surface is obtained. The rough surface is assumed to consist of a large number of independent point scatterers which fluctuate randomly in vertical position and also disappear and appear at random. The surface is divided into cells so that no more than one scatterer can occupy a cell, and the events ... View full abstract»

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  • A method for evaluating antennas

    Publication Year: 1958, Page(s):95 - 96
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (198 KB)

    An ideal figure of merit for a communications antenna is derived. This figure of merit is a measure of the time required to transmit a given message to an isotropic receiving antenna from a transmitter which uses the antenna under evaluation. View full abstract»

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  • Wide-angle scanning with microwave double-layer pillboxes

    Publication Year: 1958, Page(s):96 - 105
    Cited by:  Papers (14)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1028 KB)

    The double-layer pillbox is a microwave parallel-plate system in which the image space and the object space relative to a two-dimensional internal reflector are electrically separated by a metal septum. The double-layer prevents the shadowing effects and impedance mismatch that result in a single-layer pillbox when energy from the reflector reenters the primary feed. It also allows correction of t... View full abstract»

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  • Surface-wave beacon antennas

    Publication Year: 1958, Page(s):105 - 114
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1491 KB)

    Experimental results with center-fed corrugated and dielectric-clad spherical-cap antennas are presented and compared with the theory. The spherical surface waves supported by these structures give rise to radiation field patterns which are omnidirectional in the azimuth plane and which can be shaped in the elevation plane over a considerable range. The corrugated sphere provides vertical polariza... View full abstract»

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  • Mechanical and electrical tolerances for two-dimensional scanning antenna arrays

    Publication Year: 1958, Page(s):114 - 120
    Cited by:  Papers (42)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (645 KB)

    An analysis is presented of the effect on radiation pattern of random errors in the construction of a two-dimensional scanning array. Translational and rotational errors in the positions of all elements are assumed together with errors in the electrical excitations themselves. Translational errors are found to cause the dominant effect. A formula connecting side lobe level and errors is derived an... View full abstract»

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  • Fundamental relations in the design of a VLF transmitting antenna

    Publication Year: 1958, Page(s):120 - 122
    Cited by:  Papers (14)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (293 KB)

    For a VLF flat-top antenna much smaller than the radian sphere (a sphere whose radius is one radianlength), the effective height, effective area, and effective volume are defined. The required power factor of radiation proportionately determines the effective volume. For a specified power to be radiated, the effective height inversely determines the current and the effective area inversely determi... View full abstract»

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  • Fundamental limitaions of a small VLF antenna for submarines

    Publication Year: 1958, Page(s):123 - 125
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (299 KB)

    A submarine requires a small VLF antenna for reception while submerged. Since the propagation in sea water is nearly vertical (downward from the surface), the only operative types are horizontal dipoles, electric and magnetic. The electric dipole is coupled by conduction and the magnetic dipole by induction in a loop. The former has no resonance and nearly unlimited bandwidth, but fails when not s... View full abstract»

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  • The prolate spheroidal antenna: Current and impedance

    Publication Year: 1958, Page(s):125 - 128
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (325 KB)

    This paper studies the near field of the prolate spheroidal antenna. By expanding the components of the electromagnetic field in terms of the spheroidal functions, we determine the current distribution over the antenna and the impedance at the gap. We consider both center and off-center gaps for kL = 1, 1.49, 2, 3, 4 , where View full abstract»

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  • An application of parageometrical optics to the design of a microwave mirror

    Publication Year: 1958, Page(s):129 - 133
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    A microwave device is described which collimates the radiation from a point feed into a parallel beam. The instrument operates by both reflection and diffraction. The offense against the sine condition is corrected perfectly, so that no monochromatic aberration is present for a moderate field even at very high apertures. The expressions of the aberrations are worked out and a graph is given where ... View full abstract»

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  • End-fire echo area of long, thin bodies

    Publication Year: 1958, Page(s):133 - 139
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (539 KB)

    The echo area resulting from traveling waves excited on the surface of long, thin bodies is considered. A means of predicting this echo area on the basis of antenna theory is derived. Computed and measured values are compared for a long wire, an ogive, and a shorted polyrod. View full abstract»

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  • Back-scattering cross section of a center-loaded cylindrical antenna

    Publication Year: 1958, Page(s):140 - 148
    Cited by:  Papers (52)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (649 KB)

    A solution of the broadside back-scattering cross section, \sigma , of a center-loaded cylindrical antenna with any load impedance, Z_{L} , is obtained by a variational method through a four-terminal network approach. A simple formula for \sigma , in terms of View full abstract»

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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