Accession Number:

AD0707107

Title:

A HIGH FREQUENCY APPROXIMATION FOR THE STRIP CURRENT,

Descriptive Note:

Corporate Author:

OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB

Report Date:

1970-03-23

Pagination or Media Count:

50.0

Abstract:

The currents on a perfectly conducting strip illuminated by a plane wave are considered. A high frequency, approximate solution is obtained by using the exact half plane currents and employing symmetry conditions, edge conditions, continuity conditions, and the high frequency behavior of the current. The approximate currents are found to agree well with the rigorously calculated currents if the strips are sufficiently wide. The far-zone scattering patterns calculated from the approximate currents are compared with rigorously calculated patterns and patterns calculated from the geometrical theory of diffraction GTD. The approximate current patterns and the GTD patterns can be used to construct a pattern which is accurate at all aspects. The effect on the pattern of certain types of errors in the current is discussed. It is seen that a small, almost periodic error in the current may result in a large error in the pattern at certain aspects. Author

Subject Categories:

  • Electricity and Magnetism
  • Optics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE