Qucs 0.0.8 has been released.

Qucs 0.0.8 has been released.

The Qucs project (Qucs = Quite Universal Circuit Simulator) today
announced the immediate availability of Qucs 0.0.8, a Qt-based
advanced and powerful microwave circuit simulator for GNU/Linux and
other UNIXes.

Qucs, including all its libraries and its applications, is available
as free (as in speech) software under Open Source licenses. Qucs can
be obtained in source code from <http://sourceforge.net/projects/qucs>.


Qucs provides a GUI based on Qt for setting up electrical and
electronic circuitry, a simulator, which is able to simulate the small-
and large signal as well as the noise behaviour of these circuits.
The results can be shown on a special presentation page in different
formats (rect, polar, smith, tabular, 3d-cartesian, locus and
polar-smith combinations). Pure digital simulations are also

Compiling Qucs 0.0.8

The complete source code for Qucs 0.0.8 may be freely
downloaded. Instructions on compiling and installing Qucs 0.0.8 are
included in the software archive. Only Qt-Libs >= 3.1 and the glibc
are required.

About Qucs

Qucs is an independent project of only a few developers, translators,
etc, collaborating over the Internet to create and freely distribute a
sophisticated, customizable and stable microwave circuit simulator.
For enhancing the development speed we are looking for more
developers, who want to support the Qucs Project.

Changes in this release

Digital simulations using FreeHDL are now possible with Qucs. The
FreeHDL program is available at <http://www.freehdl.seul.org>.
Truth-table generation as well as arbitrary signals in digital
circuits are possible.

The new release comes with a translation into Turkish, two new
diagrams - truth table and timing diagram. Non-Qucs files can be
added to a project, matching circuits can be created and there is
a dialog for changing the properties of several components at once.
The filter synthesis tool supports some more filter types, many new
models have been added to the component libraries and the DC bias
can be annotated in the schematic. Also digital gates, correlated
noise sources, an ideal coupler and mutual inductors are now

Beside the above new components the simulation backend also
implements the temperature and area models of the diode, jfet, mosfet
and bjt. The equation solver allows impedances other than 50ohms
in rtoz(), ztor(), stoy(), ytos(), stoz(), ztos(), rtoy() and ytor()
and supports some new functions: stos(), dft(), idft(), fft() and
ifft(). For imported S-parameter file data a cubic spline
interpolation is possible. The SPICE converter now also translates
two and three mutual inductor constellations.


A lot of thanks go to the translators and to the supportive user
responses so far encouraging us to improve the software. We couldn't
have done it without you!

Posted by Stefan Jahn 2006-01-21

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