Qucs
Qucs is a circuit simulator with a graphical user interface. It aims to support all kinds of circuit simulation types, including DC, AC, S-parameter, and harmonic balance analysis.
| Tags | Scientific/Engineering Electronic Design Automation (EDA) |
|---|---|
| Licenses | GPL |
| Implementation | C++ |
| Translations | Arabic Catalan Czech French German Hebrew Hungarian Italian Japanese Polish Portuguese Romanian Russian Spanish Swedish Turkish Ukrainian |
Recent releases
- 25 Apr 2009 20:13
Changes: This release comes with new translations into Arabic and Czech, model libraries for MOSFETs regulators, varistors, and ideal components, and many new primitive components such as EPFL-EKV NMOS/PMOS V2.6, HICUM L0 v1.2, and numerous digital primitives. Passing parameters to Verilog-HDL and VHDL subcircuits and typed generic parameters of VHDL files are now supported as well as arbitrary in/out signals. The Qucs-Converter tool now allows you to translate existing HICUM models into library elements as well as the translation of polynomial C's and L's and F, H, E, and G polynomial SPICE sources.
- 10 Apr 2008 13:37
Changes: This release comes with a few new components, i.e., diac, triac, thyristor, logarithmic amplifier, HICUM L0 v1.12, potentiometer, equation defined RF device, and MESFET (Curtice, Statz, TOM-1, and TOM-2). The Qucs-Transcalc tool also contains synthesis and analysis of coplanar line types. Printing under Win32 has finally been fixed. Support for sub- and super-script in graphical text paintings has been added. Last but not least, versions of PlotVs() with 3 or more arguments have been added to the equation solver capabilities.
- 30 Dec 2007 09:24
Changes: This release comes with some new components, i.e. file-based current and voltage sources, a modular operational amplifier, and the HICUM L2 v2.22 device model. In equations, immediate vectors and matrices are allowed as well as engineering notation of numbers, and some more functions have been added (random, srandom, StabFactor, and StabMeasure). Touchstone files can be exported and CSV files can be imported using the command line data converter QucsConv.
- 17 Jun 2007 07:28
Changes: This release comes with a translation into Ukrainian, a selectable preprocessor in the SPICE component, and two new components (exponential voltage and current source). Libraries can now contain analogue as well as digital subcircuits. Analogue modelling is substantially strengthened by symbolically defined devices. The list of available functions in the equation solver has been extended to support more functions, logical and rational operators, and the ternary ?: construct. Pure digital simulations can be also performed by Verilog-HDL as an alternative to VHDL.
- 18 Mar 2007 00:14
Changes: This release comes with two new translations into Czech and Catalan, subcircuit parameters and equations in subcircuits. Some new components have been added, including the device models for HICUM L2 v2.1 and FBH HBT using a Verilog-AMS interface. Subcircuit parameters have been implemented, which can be sweep parameters and constants as well as equation variables. Equation variables can now also be used in component properties and input parameters of components in equations. The model for the non-ideal microstrip junction has been implemented.
