Shaping Antenna Phase and Amplitude Distributions for Low Sidelobes

Abstract

For many radar applications, extremely low antenna sidelobes can improve system performance. Current techniques utilize only the antenna amplitude distribution to produce lower sidelobes. This report presents results of an investigation of combined amplitude and phase tapering to produce lower sidelobes. Combinations of phase and amplitude distributions and the resulting far-field patterns were studied theoretically through computer analysis. Gaussian phase tapers with cosine and modified Taylor amplitude distributions were studied in detail. Experimental work included the construction of a dielectric lens for a horn antenna that significantly lowered the sidelobe level. Design information was compiled to demonstrate tradeoffs between amplitude tapering alone and combined phase and amplitude tapering.

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Document Details

Document Type
Technical Report
Publication Date
Feb 28, 1971
Accession Number
AD0722718

Entities

People

  • Charles P. Burns
  • Edward B. Joy
  • Harry A. Ecker

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Antenna Radiation Patterns
  • Antennas
  • Computer Programs
  • Computers
  • Construction
  • Curve Fitting
  • Far Field
  • Frequency
  • Horn Antennas
  • Near Field
  • Phased Arrays
  • Radiation
  • Radiation Patterns
  • Sidelobes
  • X Band

Fields of Study

  • Physics

Readers

  • Phased Array Antenna Design.