ANTENNA LOBE SUPPRESSION. VOLUME 1. MODIFICATION OF HORN ANTENNAS FOR LOW SIDELOBE LEVELS

Abstract

Four modified horn antennas with greatly reduced backlobes are described. The principal method of reducing backlobes consists of preventing the energy from illuminating the edges from which it is diffracted into the back regions. The mechanism for forcing energy away from these edges is the use of microwave absorber material, choke slots, and corrugated surfaces. An additional feature of these devices is an extremely smooth main beam with no discernible sidelobes. A diffraction screen has also been constructed that makes use of this principle. Such screens should find application in the reduction of ground clutter in radar systems.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1965
Accession Number
AD0623072

Entities

People

  • C. Davis
  • L. Peters Jr.
  • R. Lawrie

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Antenna Lobes
  • Antenna Radiation Patterns
  • Antennas
  • Backlobes
  • Bandwidth
  • Diffraction
  • Frequency
  • Ground Clutter
  • Horn Antennas
  • Radar
  • Radiation
  • Radiation Patterns
  • Radio Frequency
  • Radio Frequency Interference
  • Reflectors
  • Sidelobes

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Radar Systems Engineering.
  • Systems Analysis and Design