Launching of Electromagnetic Surface Waves on Axial Cylindrical Reactive Surface with Negative Permittivity
Final rept. 23 Mar 2004-23 Mar 2005
CRANFIELD UNIV (UNITED KINGDOM) ROYAL MILITARY COLLEGE OF SCIENCE
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This report results from a contract tasking Royal Military College of Science RMCS, Cranfield University as follows The Grantee will investigate methods for reducing radar cross section of antennas. Specifically 1. Formulation of the antenna and waveguide launcher problem i Define intra- and exterior-field forms on the antenna, ii define negative permittivity expressions appropriate to the medium composing the cylindrical radiator, for e.g., plasma or other electronic resonant media meta-materials, iii formulate eigenfunction encompassing antenna and waveguide structure, and then determine iv the eigenvalues of the principal supported modes. 2. Formulate solutions for the scattered fields by i applying boundary conditions and ii decomposing the total field into its incident and scattered field component. 3 Define functional theoretic transforms for the scattered fields. The likely mathematical steps will include i splitting the scattered field expressions into its bi-laterial Laplace equivalence and then ii Fourier transform expressions to z andor w planes. 4. Evaluate scattered field solutions via Wiener-Hopf integrals to determine i total average power transmitted to the surface, ii total average reflected and iii total power radiated, per unit incident power.
- Electrical and Electronic Equipment
- Radiofrequency Wave Propagation