Analysis of a magnetic-line source on a truncated dielectric layer structure by using a combination of the expansion-wave concept and physical-optics methods

Abstract

A new approach based on the combination of the physical‐optics (PO) formulation and the expansion‐wave concept (EWC) has been used to model the radiation pattern of a magnetic‐line source on a truncated dielectric layer structure. The EWC is used to approximate the PO fields by expansion waves. The advantage of the method is that it keeps the flexibility of the PO, allowing the analytical analysis of very complex multilayered substrates. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 24: 414–418, 2000.

Efficient integral equation formulation of diffraction at the edge of a truncated dielectric structure based on PO solutions: Application to the case of arbitrarily polarized line sources

“…The o‐marks are used for the solution obtained with A‐IE . The dash‐dot line is used for the solution obtained with the PO approximation of Volski and Vandenbosch [2000a]. In Figure 4 the x‐marks are used for the UTD solution.…”

“… where subscript inf denotes the infinite layer structure without conducting wall, K 1 PO is a physical optics current , J T PO is a volume/surface equivalent electric current of the truncated layer structure. This is the same equivalent current that is used by the PO model [ Volski and Vandenbosch , 2000a]. Let us note that the regions 1 and 1a in Figure 3b are similar.…”