Linear Arrays with Arbitrarily Distributed Elements

Abstract

A linear array with general arbitrarily distributed elements is discussed, A matrix relation is found between the elements of the array andits far zone pattern. The radiated power is shown to consist of distinct modes; the magnitude of each is related directly to the elements.The total radiated power is calculated for basic, broadside and end-fire arrays, in terms of the interaction coefficients. The lower bound of thestored energy and the Q factor of the array are found. A figure of merit for the array is defined. A method of analyzing a given array from amplitude measurements of the pattern is given. Two examples are given for linear arrays which produce a prescribed pattern. Comparison between an array with equi-spaced elements and an array with arbitrarily distributed elements shows that the latter requires fewer elements and gives better performance.

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Document Details

Document Type
Technical Report
Publication Date
Nov 02, 1956
Accession Number
AD0118981

Entities

People

  • H. Unz

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplitude
  • Bessel Functions
  • Binomials
  • Coefficients
  • Directives
  • Engineering
  • Figure Of Merit
  • Fourier Series
  • Frequency
  • Linear Arrays
  • Materials
  • Numbers
  • Polynomials
  • Q Factor
  • Radiation
  • Radiation Patterns
  • Waves

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Regression Analysis.
  • Structural Dynamics.

Technology Areas

  • Space