Converting from Cadence Allegro to Agilent ADS

Abstract

This paper describes how to transfer the layout of a multi-layer test board from Cadence Allegro into Agilent’s ADS for the purpose of simulating critical nets and deriving S-parameters.

The Allegro layout is exported as Gerber and drill data; a program called NETEX-G reads the Gerber/Drill, retraces the connectivity of each net and outputs the data in EGS archive format - a database native to Agilent’s Advanced Design System.

NETEX-G also allows the user to specify a window or a selected set of nets for extraction. This ability is quite important as it is not possible to simulate the entire board in a reasonable amount of time.

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