Slotted Antenna with Uniaxial Dielectric Covering

Abstract

An antenna capable of being joined to an antenna feed perpendicular to a ground plane includes a conductive radiator and a cylindrical shell. The conductive radiator is tubular and has a longitudinal slot along the entire length thereof. The slot is parallel to the radiators axis. The antenna feed can be connected across the slot. A cylindrical shell of a uniaxial dielectric material is provided outside and spaced apart from the conductive radiator and extends beyond ends of the conductive radiator. The cylindrical shell electrically contacts the ground plane. The shell is made from a material having a dielectric tensor with high impedance in the axial direction. This antenna gives enhanced bandwidth over ordinary slotted antennas. The shell can be applied to preexisting antennas.

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Document Details

Document Type
Technical Report
Publication Date
Jul 08, 2016
Accession Number
AD1026314

Entities

People

  • David A. Tonn

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Antenna Feeds
  • Antennas
  • Band Gaps
  • Bandwidth
  • Cartesian Coordinates
  • Cylindrical Antennas
  • Dielectric Permittivity
  • Dielectrics
  • Electric Fields
  • Electromagnetic Properties
  • Energy Bands
  • Frequency
  • Frequency Bands
  • Inventions
  • Materials
  • Patent Applications
  • Radio Frequency
  • Standing Wave Ratios
  • Standing Waves
  • Syntactic Foams
  • Technology Transfer
  • Transmission Lines
  • Traveling Waves
  • Undersea Warfare

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Microwave Engineering.

Technology Areas

  • Space