A Printed Circuit Folded Dipole with Integrated Balun

Abstract

This report documents the design and testing of a printed circuit folded dipole with a unique double-tuning balun as feed. Simple transmission line theory is used to analyze the balun structure, whereas the method-of- moments and conformal mapping techniques are used to analyze the dipole impedance and step-up ratio. Two dipoles were then fabricated on substrates of different dielectric constant material. The antenna designs were then tested for impedance match and radiation characteristics. First, SWR measurements were made on the two dipoles that were fabricated, and the results compared to theory. Next, antenna patterns are taken of the folded dipoles at several frequencies over the operating band to determine any frequency dependence of the patterns. Finally, cross-polarization patterns are presented. (RH)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1989
Accession Number
ADA225561

Entities

People

  • Paul M. Proudfoot

Organizations

  • Rome Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Antennas
  • Circuits
  • Conformal Mapping
  • Cross Polarization
  • Diagrams
  • Dielectric Permittivity
  • Equivalent Circuits
  • Frequency
  • Impedance
  • Materials
  • Measurement
  • Method Of Moments
  • Polarization
  • Printed Circuits
  • Radiation
  • Substrates
  • Transmission Lines

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Electronics Engineering