DocumentCode :
988450
Title :
A Poynting vector approach to creeping-wave analysis of the sphere
Author :
Ryan, C.
Author_Institution :
Ohio State University, Columbus, OH, USA
Volume :
16
Issue :
6
fYear :
1968
fDate :
11/1/1968 12:00:00 AM
Firstpage :
774
Lastpage :
776
Abstract :
A ray path geometry is derived using the Poynting vector to calculate the surface fields due to creeping waves in both the 
- and 
-planes of the sphere. The geodesics (great circles) are determined by assuming that at each point on the shadow boundary the initial direction of the ray is specified by the direction of real power flow calculated from the exact Poynting vector. The resulting ray geometry allows calculation of the creeping-wave surface field in both the - and -planes.
- and -planes of the sphere. The geodesics (great circles) are determined by assuming that at each point on the shadow boundary the initial direction of the ray is specified by the direction of real power flow calculated from the exact Poynting vector. The resulting ray geometry allows calculation of the creeping-wave surface field in both the - and -planes.Keywords :
Electromagnetic surface waves; Geometrical diffraction theory; Spheres; Surface electromagnetic waves; Attenuation; Geometry; Geophysics computing; Load flow; Military computing; Physical theory of diffraction; Scattering; Surface waves; Surveillance;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1968.1139299
Filename :
1139299
Link To Document :
