Boundary‐element method based on charge‐field integral equation

Chang, The Nan; Chen, Y. H.

doi:10.1002/(sici)1098-2760(199809)19:1<69::aid-mop19>3.3.co;2-0

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A suitable integral equation for the quasi-TEM analysis of hybrid strip/slot-like structures

Martel

Medina

2001

IEEE Trans. Microwave Theory Techn.

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This paper reports on a suitable formulation of the spectraldomain/integral-equation method for the quasi-TEM analysis of hybrid strip/slot-like planar lines. The free surface charge distribution is used as an unknown on the strip-like interface, whereas the electric field is used on the slot-like region. This formulation allows us to reduce the number of basis functions and makes possible a unified treatment of the problem. A single type of basis functions is used, leading to a quasi-analytical evaluation of the Galerkin matrix entries. The performance of the method is illustrated with a practical example structure useful for coupler design.

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