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Antennas and Propagation, Transactions of the IRE Professional Group on

Volume 2: 1954

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Displaying Results 1 - 9 of 9
  • [Back cover]

    Publication Year: 1954 , Page(s): c4
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  • An exact step-up impedance-ratio chart of a folded antenna

    Publication Year: 1954 , Page(s): 163
    Cited by:  Papers (4)
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  • News and views

    Publication Year: 1954 , Page(s): 129 - 131
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    Freely Available from IEEE
  • [Front cover and tabel of contents]

    Publication Year: 1954 , Page(s): c1
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    Freely Available from IEEE
  • Radiation from a vertical dipole over a stratified ground (Part II)

    Publication Year: 1954 , Page(s): 144 - 146
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (240 KB)  

    Further results are given for the problem of a vertical electric dipole situated over a horizontally stratified conductor. It is pointed out that under certain conditions the surface-wave field intensity for a stratified conducting ground is greater than the corresponding case for a perfectly conducting ground. Numerical values for the attenuation factor are also given. View full abstract»

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  • A waveguide array for solar noise studies

    Publication Year: 1954 , Page(s): 147 - 152
    Cited by:  Papers (5)
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    A description is given of a 150-foot slotted waveguide array which was built for solar noise studies at wavelengths near 10.3 centimeters. Some of the problems associated with the design of such an array are discussed. View full abstract»

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  • Dielectric sheet radiators

    Publication Year: 1954 , Page(s): 152 - 158
    Cited by:  Papers (2)
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    A class of electromagnetic radiators is described which employs the principle of waveguiding along a flat surface by means of dielectric coating. Radiation occurs as a result of nonuniformities in the guiding system. The efficiency of the feeding arrangements and diffraction over the edge of the flat surface are factors in the side-lobe level observed. A unit is described which has been used aboard missiles. A series of tests are reported which illustrate some of the characteristics of the radiators. Data for comparison with corrugated surface antennas is given. Problems for further investigation are listed. An experimental unit is described with a gain of 25 db and an efficiency compared to conventional aperture radiators of about 60 percent. This unit has linear dimensions comparable to a hem producing the same beamwidth. View full abstract»

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  • Evaluation of errors in an eight-element adcock antenna

    Publication Year: 1954 , Page(s): 159 - 162
    Cited by:  Papers (2)
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    An analysis is given for the response of an eight-element direction finding antenna to a localized radio-frequency source. The error between the indicated and true bearing is evaluated and illustrated by graphs. It is also shown that the additional error, introduced by bringing the source into proximity of the antenna system is negligible if the antenna-source distance is greater than 5\lambda . This is an important consideration in the calibration of the system. View full abstract»

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  • Analysis of helical transmission lines by means of the complete circuit equations

    Publication Year: 1954 , Page(s): 132 - 143
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (936 KB)  

    A set of integro-differential equations, called the "complete circuit equations," are derived from Maxwell's equations and applied to the solution of the parallel-wire transmission lines the double-helix transmission line, and the single helix, or helical waveguide. These equations take into account the effects of inductance and capacitance distribution, retardation, and outward radiation. A generalization of earlier concepts of distributed inductance and elastance (or inverse capacitance) is manifest in the solution of the helical lines where these quantities become functions of the phase coefficient or wavelength of propagation and are Fourier transforms of certain closed-form distribution functions. In general, phase velocity is a complicated implicit function of frequency, but under a hypothesis of "mode segregation on the basis of wavelength" the phase velocity and frequency can be obtained parametrically in terms of a third variable, called the phase parameter. Using this hypothesis, plots of phase velocity and characteristic impedance versus frequency were obtained for the double helix and the helical waveguide. View full abstract»

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Aims & Scope

This Transactions ceased publication in 1955. The current retited publication is IEEE Transactions on Antennas and Propagation.

Full Aims & Scope