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Efficient analysis of planar circulators by a new boundary-integral technique

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2 Author(s)
Gentili, G.G. ; Dipartimento di Electronica e Informazione, Politecnico di Milano, Italy ; Macchiarella, G.

The application of a new boundary-integral technique to the study of planar circulators in stripline/microstrip technology is described. The technique employs Green's second identity with plane waves as weighting functions, and leads to a very efficient algorithm for the analysis of planar devices in anisotropic media. Extensive comparison is made with results from the standard contour-integral formulations with very good agreement between the two techniques. The new technique is more stable in the critical region (μeff close to 0) and is somewhat faster

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:42 ,  Issue: 3 )