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High-frequency analysis of an array of line sources on a truncated ground plane

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4 Author(s)
Capolino, F. ; Coll. of Eng., Siena Univ., Italy ; Albani, M. ; Maci, S. ; Tiberio, R.

A uniform high-frequency solution is presented for the field radiated at finite distance by a semi-infinite beam-scanning array of magnetic line sources located on a perfectly conducting half-plane. The field is represented in terms of Floquet waves plus their relevant singly and doubly diffracted rays, which arise from both the end of the array and the edge of the half-plane. This representation is uniformly valid also when transition conditions from propagating to evanescent Floquet waves occur. Furthermore, it provides a simple and attractive physical interpretation and is found numerically very effective, due to the fast convergence of the Floquet wave expansion for the field

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Antennas and Propagation, IEEE Transactions on  (Volume:46 ,  Issue: 4 )