Investigation of a Square-Mesh Wire-Grid Modified-Luneburg-Lens Antenna

Abstract

Research concerns the design, construction and measured performance of an experimental square mesh wire-grid modified Luneburg lens antenna. This novel antenna shows great promise for many applications. The lens part consists of a ground plane above which is placed a circular square-mesh wire-grid whose distance from the ground plane is varied to achieve a focusing effect. The lens is loaded with a radial horn to obtain a high radiation efficiency. The lens antenna was tested with an omnidirectional feed and with a directional feed in a bandwidth of more than 2:1. The measured radiation patterns agree well with the theoretical patterns. With a simple directional feed, side-lobe levels of below -20 db were obtained.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1961
Accession Number
AD0268004

Entities

People

  • M. G. Andreasen
  • R. L. Tanner

Organizations

  • SRI International

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Antennas
  • Bandwidth
  • Bessel Functions
  • Broadband
  • Contracts
  • Dielectric Permittivity
  • Diffraction
  • Frequency
  • Frequency Bands
  • Government Procurement
  • Governments
  • Lens Antennas
  • Radiation
  • Radiation Patterns
  • Wave Functions
  • Yagi Antennas

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Phased Array Antenna Design.