Nulling with Limited Degrees of Freedom,

Abstract

A partial adaptive array is a more feasible alternative to the fully adaptive array when the number of array elements becomes very large. Three possible methods of implementing partial nulling are to place the adaptive controls at (1) selected elements in the aperture, (2) the subarray outputs, or (3) the feed of a space fed array. Of these choices, the first produces much less distortion to the antenna's far field pattern than the other two. This report analyzes the distortions due to nulling with limited degrees of freedom. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1983
Accession Number
ADA132276

Entities

People

  • Randy L. Haupt

Organizations

  • Rome Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Amplitude
  • Antenna Configurations
  • Antennas
  • Arrays
  • Cancellation
  • Complex Variables
  • Distortion
  • Equations
  • Far Field
  • Gain
  • Linear Arrays
  • Phase Shift
  • Phased Arrays
  • Security
  • Sidelobes
  • Simultaneous Equations

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Manufacturing Engineering.

Technology Areas

  • Space