Physical bounds in EM

2003-01-01 -> 2008-12-31

Project Description

In this project, we analyze the interaction between electromagnetic waves and objects. We try to answer questions as:

What are the trade-offs between scattering, absorption, and bandwidth?

How much power can an object remove from an EM wave?

Our approach

Results

The identity is also used to derive physical bounds on antennas.

C. Sohl, M. Gustafsson, G. Kristensson:
Physical limitations on broadband scattering by heterogeneous obstacles
J. Phys. A: Math. Theor., Vol. 40, pp. 11165-11182, 2007. 

C. Sohl, M. Gustafsson, G. Kristensson:
Physical limitations on metamaterials: restrictions on scattering and absorption over a frequency interval
J. Phys. D: Appl. Phys., Vol. 40, No. 22, pp. 7146-7151, 2007. 

C. Sohl, C. Larsson, M. Gustafsson, G. Kristensson:
A scattering and absorption identity for metamaterials: experimental results and comparison with theory
J. Appl. Phys., Vol. 103, No. 5, pp. 054906:1-5, 2008. 

Background