DocumentCode :
973666
Title :
Effect of obstacle profile on knife-edge diffraction
Author :
Bachynski, M.P. ; Kingsmill, M.G.
Author_Institution :
RCA Victor Research Laboratories, Montreal, Quebec, Canada
Volume :
10
Issue :
2
fYear :
1962
fDate :
3/1/1962 12:00:00 AM
Firstpage :
201
Lastpage :
205
Abstract :
Experimental studies on the effects of the profile of a dominant obstacle on the diffraction of electromagnetic waves are described. A comparison of the distribution of diffracted power behind triangular (both symmetrical and nonsymmetrical) knife edges and semicircular knife edges shows some important practical features. In contrast to the case of a horizontal obstacle, the transverse profile of the triangular obstacle determines the optimum receiving site and relatively small changes in receiver location can result in substantial changes in received power. On the other hand, the semicircular knife edge can be adequately described in terms of a rectangular ( 180\\deg ) knife edge. In no case is an effect on the far field due to the polarization of the incident fields apparent.
Keywords :
Antenna terrain factors; Electromagnetic diffraction; Apertures; Diffraction; Electrooptic effects; Fresnel reflection; Geometry; Scattering; Transmitters;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IRE Transactions on
Publisher :
ieee
ISSN :
0096-1973
Type :
jour
DOI :
10.1109/TAP.1962.1137840
Filename :
1137840
Link To Document :
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