Low-Profile UHF Antenna Design Based on an Anisotropic Transverse Resonance Condition

Abstract

A resonance condition is derived for a tapered rectangular cavity partially loaded with anisotropic magnetic material. This resonance condition leads to the design of an extremely low-profile (lambda sub 0/18) antenna with over an octave of bandwidth and positive realized gain from 200-515 MHz. The equation derived for the shape of the partially loaded antenna cavity maintains a constant cutoff frequency even as more anisotropic material is introduced to the cavity. Also a method is determined to tailor the shape of the cavity as needed using the normal component of the permeability tensor with little to no effect on the performance of the antenna.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2014
Accession Number
ADA608719

Entities

People

  • Gregory Mitchell
  • Wasyl Wasylkiwskyj

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Bandwidth
  • Boundaries
  • Dielectrics
  • Electric Conductors
  • Equations
  • Frequency
  • Frequency Bands
  • Insertion Loss
  • Magnetic Fields
  • Magnetic Materials
  • Materials
  • Metamaterials
  • Permeability
  • Resonance
  • Resonant Frequency
  • Transmission Lines
  • Transverse

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Systems Analysis and Design