V. A. Fock, Electromagnetic Diffraction and Propagation Problems. (International Series of Monographs on Electromagnetic Waves, Volume 1) IX + 414 S. m. Fig. u. Tab. Oxford/London/Edinburgh/New York/Paris/Frankfurt 1965. Pergamon Press. Preis geb. $ 7 net

1966 ◽  
Vol 46 (1) ◽  
pp. 76-76
Author(s):  
W. Macke
Keyword(s):  
New York ◽  
Electromagnetic Waves ◽  
Electromagnetic Diffraction

Electromagnetic diffraction by a circular aperture in a plane screen between different media

1969 ◽  
Vol 47 (8) ◽  
pp. 921-930 ◽  
Author(s):  
D. P. Thomas
Keyword(s):  
Integral Equations ◽  
Electromagnetic Waves ◽  
Low Frequency ◽  
Circular Aperture ◽  
Backscatter Coefficient ◽  
Conducting Plane ◽  
Hertz Vector ◽  
Time Harmonic ◽  
The Waves ◽  
Electromagnetic Diffraction

The problem of diffraction of time harmonic, electromagnetic waves by a circular aperture in a perfectly conducting, plane screen between different media is considered. In this investigation, the incident wave is a plane wave travelling in a direction perpendicular to the screen. A Hertz vector formulation is used to reduce the electromagnetic problem to a system of scalar problems, which is shown to be governed by a pair of simultaneous integral equations of the second kind. The integral equations are valid for all wavelengths and are especially useful when the waves in both media have long wavelengths compared with the radius of the aperture. Low frequency approximations to the tangential components of the electric field in the aperture, the transmission coefficient, and the backscatter coefficient are obtained.

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