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

Published Web Location Commons 'BY' version 4.0 license

A uniform high-frequency solution is presented for the field radiated at finite distance by a semi-infinite beamscanning 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. © 1998 IEEE.

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