Comparison of Anisotropic versus Isotropic Metamaterials in Low Profile UHF Antenna Design

Abstract

This report compares the use of anisotropic material versus isotropic material in a partially loaded cavity-backed antenna. Both magnetic and dielectric materials are studied, and a full case study is performed highlighting the different effects produced by varying the individual anisotropic tensor elements. The final result of the study is a design for a low profile (0.055 ) cavity backed antenna. The shape of the cavity is uniquely determined by a transverse resonance resulting from the partial loading and the permittivity and/or permeability of the anisotropic material. The performance of the final design compares favorably both in realized gain and VSWR from 300 MHz 500 MHz to a benchmark case. The benchmark case has the same aperture dimensions, but a large profile (.275 ) due to the absence of the high index anisotropic material.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2014
Accession Number
ADA606519

Entities

People

  • Gregory A. Mitchell

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Case Studies
  • Dielectrics
  • Frequency
  • Frequency Bands
  • Magnetic Fields
  • Magnetic Materials
  • Magnetic Properties
  • Materials
  • Metamaterials
  • Permeability
  • Radiation Patterns
  • Resonance
  • Resonant Frequency
  • Simulations
  • Three Dimensional
  • Transmission Lines
  • Transverse

Readers

  • Microwave Engineering.
  • Phased Array Antenna Design.
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Microelectronics