Scanning-Phase Correction for an Offset-Feed Near-Field Gregorian Reflector

Abstract

A method is presented to correct the scanning-phase error of an offset-feed near-field Gregorian reflector antenna. A numerical search is performed to find the array scan angle for each element to produce a specified reflector scan angle. This results in a nonlinear array-aperture phase distribution that produces a linear phase front across the main reflector's aperture. For the geometrical parameters considered, the phase correction can be accomplished without any loss in main-beam power or scan range.

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1992
Accession Number
ADA251645

Entities

People

  • T. J. Peters

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Classification
  • Computer Programs
  • Computers
  • Distortion
  • Electric Fields
  • Equations
  • Geometry
  • Near Field
  • Optical Properties
  • Peak Power
  • Reflectors
  • Scanning
  • Security
  • Spherical Waves
  • Transfer Functions
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Phased Array Antenna Design.