Electronic circuit

Qucs – integrated circuit simulator

Qucs stands for Quite Universal Circuit Simulator.

Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit. After the simulation has finished you can view the simulation results on a presentation page or window.

The software aims to support all kinds of circuit simulation types, e.g. DC, AC, S-parameter and harmonic balance analysis.

Key Features

  • Easy to use graphical interface for schematic capture.
  • Simulation data representation in various types of diagrams, i.e., Smith-Chart, Cartesian, Tabular, Polar, Smith-Polar combination, 3D-Cartesian, Locus Curve, Timing Diagram and Truth Table.
  • Transmission line calculator.
  • Filter synthesis.
  • Smith-Chart tool for power and noise matching.
  • Attenuator design synthesis.
  • Device model and subcircuit library manager.
  • Optimizer for analog designs.
  • Verilog-A interface.
  • Support for multiple languages (GUI) and internal help system).
  • Subcircuit (including parameters) hierarchy.
  • Powerful data post-processing possible using equations.
  • Symbolically defined nonlinear and linear devices.
  • Documentation including:
    • many useful tutorials (WorkBook).
    • reports (ReportBook).
    • technical description of the simulator.

Website: qucs.sourceforge.net
Support: User Manual, GitHub Code Repository
Developer: Michael Margraf, Stefan Jahn
License: GNU GPL v2

Image of Qucs in action
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Qucs is written in C++. Learn C++ with our recommended free books and free tutorials.


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