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An Analog Node Model for VHDL Based Simulation of RF Integrated Circuits

  • This paper describes a very-high-speed integrated-circuit hardware description language (VHDL)-based analog-node model, an associated driver component for the mixed-signal event-driven (MixED) simulation technique, and some primitive device models applied to radio-frequency integrated circuits. With the presented MixED method, analog circuits are modeled as a composition of controlled sources. Unlike other VHDL-based analog simulation methods, these MixED sources compute not only a real number representing an output voltage but also an output impedance. This allows the outputs of several MiXED sources to be connected in order to drive the same node signal n . The voltage of this record-type signal is automatically computed at its element n . u by resolution functions in compliance with Kirchhoff's current law. The data structure of the node signal n , its self-defined resolution functions, and an associated driver component are presented and discussed to meet different simulation requirements, such as speed, versatility, current accuracy, and adaptive time stepping. Several examples demonstrate how to behaviorally model mixed-signal components with this method with an emphasis on the simulation of a heterodyne receiver. Simulation speeds are compared to VHDL-AMS tools.

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Metadaten
Author:Martin J. W. Schubert
DOI:https://doi.org/10.1109/TCSI.2009.2027799
Parent Title (English):IEEE Transactions on Circuits and Systems I, Regular Papers
Document Type:Article
Language:English
Year of first Publication:2009
Release Date:2021/05/21
Tag:Analog integrated circuits; Circuit simulation; Computational modeling; Driver circuits; Hardware design languages; Integrated circuit modeling; Radio frequency; Radiofrequency integrated circuits; Signal resolution; Voltage
Volume:56
Issue:12
First Page:2717
Last Page:2727
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Elektronik
research focus:Produktion und Systeme