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time for digital files (Verilog and VHDL) are now stored in an additional configuration file and the import dialog has been replaced by a complete import/export frontend for the Qucs-Converter command line tool.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.