Directivity and Beamwidth Approximations for Large Scanning Dolph-Chebyshev Arrays

Released on by Charles J. Drane (Jr.)
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  • Directivity and Beamwidth Approximations for Large Scanning Dolph-Chebyshev Arrays Book Detail

  • Author : Charles J. Drane (Jr.)
  • Release Date : 1965
  • Publisher :
  • Genre : Antenna radiation patterns
  • Pages : 38
  • ISBN 13 :
  • File Size : 14,14 MB
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Directivity and Beamwidth Approximations for Large Scanning Dolph-Chebyshev Arrays by Charles J. Drane (Jr.) PDF Summary

Book Description: Directivity and beamwidth for radiation patterns corresponding to the optimum Dolph-Chebyshev design have heretofore been determined by means of formulas that, although exact, are intractable to computation and not particularly open to physical interpretation. Approximate but accurate formulas are presented here in closed form, for the purpose of easy examination and computation of directivity and beamwidth for large scannable Dolph-Chebyshev arrays. Array length, number of array elements, the spacing of these elements, and the sidelobe level desired are parameters in this study. The maximum achievable directivity for Chebyshev arrays is in principle limited, regardless of how large the array becomes. Data is given to establish the array length required to obtain a value of directivity at some prescribed level below the maximum value. Comparisons between exact and approximate theory are presented in graphical form in such a way as to illustrate the lower limits of array size for which the approximations are valid. Element spacings less than a half-wavelength are included in this study. (Author).

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Antenna Handbook

Antenna Handbook

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Techniques based on the method of modal expansions, the Rayleigh-Stevenson expansion in inverse powers of the wavelength, and also the method of moments solutio