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Qucs is a circuit simulator with a graphical user interface. It aims to support all kinds of circuit simulation types, e.g. DC, AC, S parameter, and harmonic balance analysis. Qucsator, the simulation backend, is a command line circuit simulator. It takes a network list in a certain format as input and outputs a Qucs dataset. It has been programmed for usage in the Qucs project but may also be used by other applications.
Update The new release comes with new translations into Arabic and Czech,
model libraries for PMOSFETs, NMOSFETs, regulators, varistors and
ideal components, and many new primitive components such as EPFL-EKV
NMOS/PMOS V2.6, rectangular waveguide, HICUM L0 v1.2, HICUM L2 v3.23,
photodiode, digital buffer, microstrip radial stub, phototransistor,
RLCG transmission line and numerous new 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. Simulation time for digital files (Verilog and VHDL) are now
stored in an additional configuration file and the import dialog has
been replaced by a complete import/export frontend for the
Qucs-Converter command line tool. US letter formats for schematic
frame have been added. The build system now implements an additional
install step for MacOSX and the appropriate icons.
In the analogue simulation core global nodes (e.g. subst!) have been
introduced, property references inside the same instance of a
component and variables in constant parameter simulation boxes are
allowed. A noise figure property has been added to the amplifier
model and the matrix power operation is available in the equation
solver. The Qucs-Converter command line tool allows now 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. |