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ElectroComponent Science and Technology
Volume 7 (1980), Issue 1-3, Pages 181-186

A New Approach to the Topological Design of Hybrid Circuits

1Lehrstuhl für Netzwektheorie und Schaltungstechnik, TU München, Arcisstraße, 21, München 2 D-8, Germany
2Weyarn, D-8153 , Germany

Received 3 September 1980

Copyright © 1980 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A computer-aided topological hybrid layout-design procedure is proposed, that yields the wanted principal routing in the form of a geometrical planarization graph. A so-called grid-embedding of a circuit graph into the Euklidean plane enables us to observe all except one of the various technological constraints. The real problem is reduced to finding a proper arrangement of “nets” and “flocks” in the plane in order to meet the omitted cross-capacity constraint. The solution is accomplished by a constructive and implicit enumeration procedure, which is used within an interactive man-machine design process.