Title : 
Minimum attenuation of spherical shields
         
        
        
            Author_Institution : 
Helsinki University of Technology, Espoo, Finland
         
        
        
        
        
            fDate : 
5/1/1968 12:00:00 AM
         
        
        
        
            Abstract : 
In this communication, a simple formula for the minimum attenuation of incoming plane waves in spherical shields is presented for practical purposes. This worst case condition is attained when the TM011resonance occurs in the room. The medium inside and outside the shield is air and the material is supposed to be well conducting.
         
        
            Keywords : 
Electromagnetic shielding; Spheres; Approximation methods; Attenuation; Backscatter; Equations; Geometry; Plasma measurements; Resonance; Scattering; Silver; Springs;
         
        
        
            Journal_Title : 
Antennas and Propagation, IEEE Transactions on
         
        
        
        
        
            DOI : 
10.1109/TAP.1968.1139190