ANTENNA LOBE SUPPRESSION. VOLUME 2. THE E-PLANE RADIATION PATTERN OF AN ANTENNA MODEL FOR HORN ANTENNAS

Abstract

Diffraction theory is used in analyzing the radiation characteristics of typical horn antennas. The far-sidelobe radiation has been solved without employing equivalence principles which are impractical in the problem. A corner reflector with a magnetic line source located at the vertex is proposed as a model for the E-plane radiation of horn antennas. Diffraction theory is applied to formulate the radiation pattern of this antenna model. A complete pattern, including multiple interactions and images of induced line sources, is obtained in infinite series form. Diffraction mechanisms are used for appropriate approximations in the computations. Emphasis is made on the continuity of the radiation patterns. The computed patterns are in excellent agreement with measured patterns of typical horn antennas. Radiation intensity of the backlobe relative to main-lobe intensity is obtained as back-to-front ratio and plotted as a function of antenna dimensions. A set of measured back-to-front ratios is presented to demonstrate the validity of computation.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1965
Accession Number
AD0623073

Entities

People

  • R. C. Rudduck
  • Yu Jin

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Antenna Lobes
  • Antenna Radiation Patterns
  • Antennas
  • Backlobes
  • Continuity
  • Corner Reflectors
  • Discontinuities
  • Far Field
  • Geometry
  • Horn Antennas
  • Mechanical Jamming
  • Near Field
  • Polyethylenes
  • Radiation
  • Radiation Patterns
  • Reflectors

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Phased Array Antenna Design.