AN EXPERIMENTAL INVESTIGATION OF MODIFIED DIPOLE ANTENNAS

Abstract

Dipole antennas with metallic shells for housing electronic equipment at the center which are called modified dipole antennas were investigated. Measurements were made on the input admittances and far field patterns of the modified dipole antennas with cylindrical and spherical shells. The input admittances of 120 degrees vee-antennas with spherical shells were also measured. The metallic shells were constructed in two diameters, 0.0625 wavelength and 0.03125 wavelength. The operating frequency used was 375 MHz. Admittance measurements were made using a Hewlett-Packard Model 803A VHF Bridge. Input admittances were measured as a function of antenna wire length. Radiation patterns were measured in the E sub theta(theta) plane for various antenna wire lengths in the resonant region.

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Document Details

Document Type
Technical Report
Publication Date
Jul 02, 1969
Accession Number
AD0692783

Entities

People

  • Danai Lekhyananda

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Communication Satellites
  • Computer Programs
  • Detectors
  • Diagrams
  • Dipole Antennas
  • Electrical Engineering
  • Electronic Components
  • Electronic Equipment
  • Engineering
  • Frequency
  • Geometry
  • Impedance
  • Measurement
  • Monopole Antennas
  • Radiation Patterns
  • Schematic Diagrams
  • Transmission Lines

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Electrical Engineering
  • Phased Array Antenna Design.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems