Abstract
An experimental approach to investigate the forward scattering sum rule for periodic structures is presented. This approach allows an upper bound on the total cross section integrated over a bandwidth from a simple static problem to be found. Based on energy conservation, the optical theorem is used to construct a relation between the total cross section and the forward scattering of periodic structures as well as single scatterers inside a parallelplate waveguide. Dynamic measurements are performed using a parallelplate waveguide and a parallelplate capacitor is utilized to find the static polarizability. Convex optimization is introduced to identify the total cross section in the dynamic measurements and estimate an optimal lower bound on the polarizability for objects. The results show that the interactions between the electromagnetic field and an object over all wavelengths are given by the static polarizability of the object.
Original language  English 

Article number  6905863 
Pages (fromto)  25742582 
Number of pages  9 
Journal  IEEE Transactions on Microwave Theory and Techniques 
Volume  62 
Issue number  11 
DOIs  
Publication status  Published  1 Nov 2014 
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Rebecca Seviour
 School of Computing and Engineering
 Ion Beam Centre
 Centre for Engineering Materials  Associate Member
Person: Academic