Adaptive Nulling in Hybrid Reflector Antennas

Abstract

Hybrid antennas. the combination of a radiating or receiving aperture with an array feed, have been the subject of considerable recent interest because they offer some of the versatility of phased array antennas at a much lower cost. Adaptive nulling in hybrid antennas has not received as much attention as other important aspects, such as compensation for reflector surface distortion, scanning, pattern calculation, and the design of multibeam antennas. In this report we investigate adaptive nulling in hybrid reflector antennas using the Generalized Sidelobe Canceller algorithm. A general framework is presented for the computer simulation of narrow band adaptive nulling in hybrid reflector antennas that takes account of the details of reflector scattering and polarization. The general framework is then illustrated by the results of calculations performed for an offset paraboloid with a planar feed located in the focal plane of the paraboloid. Hybrid antennas, Adaptive nulling, Reflectors, Offset paraboloid, Array feed, Generalized sidelobe. Canceller,

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1992
Accession Number
ADA275797

Entities

People

  • Robert A. Shore

Organizations

  • Rome Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Algorithms
  • Antennas
  • Arrays
  • Cartesian Coordinates
  • Computer Programs
  • Computer Simulations
  • Computers
  • Coordinate Systems
  • Distortion
  • Focal Planes
  • Multiple Beam Antennas
  • Phased Arrays
  • Plane Waves
  • Polarization
  • Radiation Patterns
  • Scanning
  • Scattering

Readers

  • Phased Array Antenna Design.