Accession Number:

ADA065588

Title:

An Asymptotic Result for the Scattering of a Plane Wave by a Smooth Convex Cylinder.

Descriptive Note:

Technical rept.,

Corporate Author:

OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB

Personal Author(s):

Report Date:

1978-03-01

Pagination or Media Count:

41.0

Abstract:

An approximate asymptotic high frequency result which is convenient for engineering applications is obtained for the field scattered by a smooth, perfectly-conducting convex cylinder when it is illuminated by a plane wave. This result is uniform in the sense that it remains valid within the transition regions adjacent to the shadow boundaries where the pure ray optic or GTD solution fails, and it automatically reduces to the ray optic solution exterior to the transition regions where the latter solution becomes valid. Furthermore, this result is expressed in the convenient format of the GTD, and it employs the same ray paths as in the GTD solution. This uniform result is not valid in the close neighborhood of the cylinder hence, a separate asymptotic result is presented for this special case in a form which is also convenient for applications. The asymptotic results presented here are useful for predicting the patterns of antennas radiating in the presence of convex, conducting cylindrical structures. Author

Subject Categories:

  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE