Correcting Feed Displacements in a Space Fed Lens Antenna

Abstract

Feed deformations in a space fed lens may seriously degrade the antenna's far field pattern. The errors in the far field pattern due to the deformations may be reduced by appropriately adjusting the phase shifters in the feed and/or lens. A linear model was used to determine and correct for feed tilt, fold, lateral far field pattern distortions due to displacement, perpendicular displacement, and any combination of these errors. Lens corrections align the main beam on boresite, while feed corrections restore gain and sidelobe levels. Combining the feed and lens corrections almost totally restores the original far field pattern.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1983
Accession Number
ADA137702

Entities

People

  • Randy L. Haupt

Organizations

  • Rome Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Amplitude
  • Antennas
  • Arrays
  • Bandwidth
  • Classification
  • Compensation
  • Displacement
  • Distortion
  • Far Field
  • Frequency
  • Lens Antennas
  • Phase Control
  • Phase Shift
  • Phased Arrays
  • Security
  • Sidelobes

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Phased Array Antenna Design.

Technology Areas

  • Space