From: Stefan J. <st...@gr...> - 2006-05-29 07:06:17
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Qucs 0.0.9 has been released. The Qucs project (Qucs = Quite Universal Circuit Simulator) today announced the immediate availability of Qucs 0.0.9, 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>. Features 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 supported. Compiling Qucs 0.0.9 The complete source code for Qucs 0.0.9 may be freely downloaded. Instructions on compiling and installing Qucs 0.0.9 are included in the software archive. Only Qt-Libs >= 3.1 (but < 4.x) 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 The new release comes with a Russian translation and the GUIs language can be explicitely chosen in the application settings dialog. The digital simulation abilities have been improved by a VHDL text editor and hand-crafted VHDL files can be used as subcircuits. The number of ports of the S-parameter component is no more limited. Components can now be either deactivated as a short or an open. There are some new components such as a coaxial line, a differential voltage probe, a switch, AM- and PM-modulators and a relais. Also many bug-fixes have been incorporated. The simulation backend does support the above mentioned new components as well. Additionally delay times of digital components and controlled sources during the transient analysis are now considered. There is a time-domain model of the ideal transmission line and a frequency- independent loss factor for this component. A damping factor for the AC voltage and current sources during transient analysis has been introduced. Temperature coefficients for the resistor have been added. Certain characteristic values (e.g. ErEff or Zl) of components can be saved into the dataset during the S-parameter simulation. Moreover the DC behaviour of the S-parameter file component can be chosen to be either an open or a short. There have been added many new functions to the equation solver: ceil, fix, floor, round, step, besselj, bessely, erf, erfc, cumsum, cumavg, cumprod, sqr, polar, rms, dbm2w, w2dbm, integrate, dbm, besseli0, erfinv, erfcinv, kbd, runavg, variance, stddev, Time2Freq and Freq2Time. The functions xvalue, yvalue, min, max and avg can have an additional range specification and the following new two-argument functions have been introduced: arctan, min and max. Last but not least a dataset can now be exported to the csv file format using the command line converter. Thanks 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! So long, the Qucs team. |