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IEEE Microwave and Guided Wave Letters
Volume 9 Number 12, December 1999

An Efficient Series Expansion for the 2-D Green's Function of a Microstrip Substrate Using Perfectly Matched Layers

Page 505.

Abstract:

A new efficient technique is proposed to derive a series representation for the two-dimensional (2-D) Green's function of a planar substrate. A perfectly matched layer (PML) is used to turn the original open configuration into a closed one. The resulting structure is regarded as a waveguide and the resulting--analytically known--discrete set of eigenmodes is then used to expand the Green's function. The method turns out to be elegant and efficient for distances larger than 0.1 away from the source.

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