THEORETICAL PATTERNS AND MODEL DATA OF A WARLA DESIGN.

Abstract

Radiation patterns measured on a 500:1 scale model are compared to patterns calculated on a digital computer. The degree of correlation found over the lowest band of the three band system is then a measure of prediction validity of the program over the other frequency ranges. Reasonably good correspondence is found. A total of 144 log-periodic elements of varying size are spaced at 2 1/2 degree increments around a 1210 feet diameter circle. Over the range 2-32 Mc, it is expected that the first sidelobe will never exceed -10 db, while the azimuthal beamwidth will decrease from 34 degrees to 1 1/2 degrees. A high front-to-back ratio is maintained at all frequencies. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1964
Accession Number
AD0605534

Entities

People

  • John W. Greiser

Organizations

  • University of Illinois Urbana–Champaign

Tags

DTIC Thesaurus Topics

  • Antenna Lobes
  • Antenna Radiation Patterns
  • Computers
  • Diameters
  • Digital Computers
  • Frequency
  • Models
  • Radiation
  • Radiation Patterns
  • Scale Models
  • Sidelobes

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Phased Array Antenna Design.

Technology Areas

  • Space