Accession Number:

ADA043400

Title:

A GTD Analysis of the Circular Reflector Antenna Including Feed and Strut Scatter.

Descriptive Note:

Final technical rept. Mar 76-Apr 77,

Corporate Author:

OHIO STATE UNIV COLUMBUS DEPT OF ELECTRICAL ENGINEERING

Report Date:

1977-08-01

Pagination or Media Count:

105.0

Abstract:

Recently, the wide angle side lobes of a circular reflector antenna pattern were calculated by the Geometrical Theory of Diffraction and an overall pattern can be obtained from a combination of GTD and aperture integration methods. In this report, the analysis is extended to include the scattering from the feed supports. The feed support scattering is treated using the concept of equivalent current line source. The cylinder scattering model developed in this report gives the effect of strut scattering on the wide angle side lobes of the reflector. The scattering from the feed struts always has its greatest effect near the scattering cones for each strut. These scattering cones usually give rise to a maximum aperture blockage effect in certain off-principal plane patterns. The analysis given here can be used to compute the complete pattern of any arbitrary plane cut for a practical circular reflector antenna system. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE