Showing posts with label equation-defined devices (EDD). Show all posts
Showing posts with label equation-defined devices (EDD). Show all posts

Nov 26, 2017

[paper] Recent Developments in Qucs-S Equation-Defined Modelling of Semiconductor Devices and IC’s

Recent Developments in Qucs-S Equation-Defined Modelling of Semiconductor Devices and IC’s
Mike Brinson, and Vadim Kuznetsov
International Journal of Microelectronics and Computer Science
2017, Volume 8, Number 1 
ISSN 2080-8755 / eISSN 2353-9607

Abstract—The Qucs Equation-Defined Device was introduce roughly ten years ago as a versatile behavioural simulation component for modelling the non-linear static and dynamic properties of passive components, semiconductor devices and IC macromodels. Today, this component has become an established element for building experimental device simulation models. It’s inherent interactive properties make it ideal for device and circuit modelling via Qucs schematics. Moreover, Equation-Defined Devices often promote a clearer understanding of the factors involved in the construction of complex compact semiconductor simulation models. This paper is concerned with recent advances in Qucs-S/Ngspice/XSPICE modelling capabilities that improve model construction and simulation run time performance of Equation-Defined Devices using XSPICE model syntheses. To illustrate the new Qucs-S modelling techniques an XSPICE version of the EPFL EKV v2.6 long channel transistor model together with other illustrative examples are described and their performance simulated with Qucs-S and Ngspice [read more...]

Fig: EKV2.6 Qucs-S long channel static I/V model test bench and typical simulated I/V output characteristics as Qucs-S Equation-Defined Model



Apr 19, 2016

[mos-ak] A new approach to compact semiconductor device modelling with Qucs Verilog-A analogue module synthesis

A new approach to compact semiconductor device modelling with Qucs Verilog-A analogue module synthesis  

M. E. Brinson 1,* andV. Kuznetsov 2  

Keywords:Qucs; Verilog-A analogue module synthesis;equation-defined devices (EDD); compact device modelling; circuit simulation  

Summary: Since the introduction of SPICE non-linear controlled voltage and current sources, they have become a central feature in the interactive development of behavioural device models and circuit macromodels. The current generation of SPICE-based open source general public license circuit simulators, including Qucs, Ngspice and Xyce©, implements a range of mathematical operators and functions for modelling physical phenomena and system performance. The Qucs equation-defined device is an extension of the SPICE style non-linear B type controlled source which adds dynamic charge properties to behavioural sources, allowing for example, voltage and current dependent capacitance to be easily modelled. Following, the standardization of Verilog-A, it has become a preferred hardware description language where analogue models are written in a netlist format combined with more general computer programming features for sequencing and controlling model operation. In traditional circuit simulation, the generation of a Verilog-A model from a schematic, with embedded non-linear behavioural sources, is not automatic but is normally undertaken manually. This paper introduces a new approach to the generation of Verilog-A compact device models from Qucs circuit schematics using a purpose built analogue module synthesizer. To illustrate the properties and use of the Qucs Verilog-A module synthesiser, the text includes a number of semiconductor device modelling examples and in some cases compares their simulation performance with conventional behavioural device models. Copyright © 2016 John Wiley & Sons, Ltd.  

Article first published online: 15 APR 2016; DOI: 10.1002/jnm.2166  


References
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[2] Johnson B, Quarles T, Newton AR, Pederson DO, Sangiovanni-Vincentelli A. Berkeley, CA. Department of Electrical Engineering and Computer Sciences, University of California, 1992.
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[3] Brinson M, Crozier R, Kuznetsov V, Novak C, Roucaries B, Schreuder F, Torri GT. Qucs (Quite universal circuit simulator), 2015. Available from: http;//qucs.sourceforge.net [Accessed November 2015].
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Direct Link:
Abstract PDF(1011K) References Web of Science® Times Cited: 7 Go here for SFX
[7] Brinson ME, Jahn S. Qucs: a GPL software package for circuit simulation, compact device modelling and circuit macromodelling from DC to RF and beyond. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields 2009; 22(4): 297–319.
Direct Link:
Abstract PDF(1156K) References Web of Science® Times Cited: 7 Go here for SFX
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CrossRefWeb of Science® Times Cited: 1
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[16] Brinson M, Crozier R, Kuznetsov V, Novak C, Roucaries B, Schreuder F, Torri GT. Qucs: an introduction to the new simulation and compact device modelling features implemented in release 0.0.19/0.0.19Src2 of the popular GPL circuit simulator. MOS-AK ESSDERC/ESSCIRC Workshop. 18 September Graz, Austria 2015. Available from: http://www.mos-ak.org/graz−2015/presentationsT−5−Brinson−MOS-AK−Graz−2015.pdf. [Accessed November 2015].
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