Back to Blog
Qucs simulation tutorial5/17/2023 ![]() ![]() Readers who are not familiar with open source software development may be unaware of how the development process works. Three of the primary aims of the work undertaken by the Qucs Development Team are firstly to remove software bugs and improve the overall performance of the package, secondly to address known weaknesses and limitations and thirdly to develop the package by adding features which increase it’s utility. Today Qucs includes an extensive range of component, device and circuit modelling tools, allowing it to model and simulate circuits built from standard components and new production devices. ![]() The onward march of technology also makes it imperative that Qucs evolves from a traditional circuit simulator to a design tool that can handle modelling and simulation of circuits which include devices from new emerging technologies. In reality Qucs is not perfect but includes a number of weaknesses and known limitations. For a high percentage of regular Qucs users the current distribution version (Qucs 0.0.18) provides a reasonably stable and accurate simulation tool equipped with more than enough facilities to meet their everyday needs. ![]() It does perhaps give an indication of the popularity of the software, particularly amongst users interested in RF circuit design and simulation. This figure does not however, imply that 1.5 million copies of Qucs are currently in regular use. The current rate of Qucs downloads from is around 3000 per week with a total of roughly 1.5 million downloads since Qucs was first released in 2003. The latest documentation can be found at. Moreover, to keep everyone up to date with Qucs current developments it is planned to updated them during future Qucs development phases. Updated versions will be published with each new Qucs release. Both the “Qucs_Help” and “Qucs-S-Help” documents are very much work in progress. Anyone interested in learning about Qucs/Qucs-S is recommended to read these publications as they provide a wealth of information on basic and advanced topics. A bibliography of these publications can be found at the end of this document. Since 2003 the Qucs Development Team, and other authors, have published a body of work concerning Qucs and its applications. The second Qucs document, called “Qucs-S-Help”, introduces more advanced simulation and modelling topics. The first of these, simply called “Qucs-Help”, provides introductory information for beginners and indeed any other users, who require help in starting to use Qucs. In future Qucs releases will be accompanied by two or more basic Qucs documents. Hence, however much documentation is written there are always likely be simulation and modelling examples that are missing from the Qucs documentation. Qucs is a large and complex package which is very flexible in the way that it can be used as a circuit design aid. ![]() Simulation and the modelling features built into Qucs. One of the most often requested new Qucs features is “better documentation”, especially documentation outlining the use and limitations of the Model development plus a range of compact and behavioural device modelling and post simulation data analysis tools that have become centralįeatures in this open source software package of surprising power and utility. Manipulation, Equation-Defined Device (EDD) modelling, Radio Frequency Equation-Defined Device (RFEDD) simulation and Verilog-A synthesised The recent versions of the software include code for algebraic equation Made to improve the device modelling tools distributed with Qucs. Including for example, transient simulation, device parameter sweep capabilities and single tone Harmonic Balance simulation, making Qucsįunctionality comparable to SPICE at low frequencies and significantly extended at high frequencies. In the years following 2003 the Qucs Development team has added a number of additional simulation facilities, Provided users with a relatively stable, flexible and functional circuit simulation package which is particularly suited to Since it was first release under the General Public License (GPL) in 2003 Qucs has Qucs was originally written as an RF and microwaveĮngineering design tool which provided features not found in SPICE, like S parameter simulation, two and multiport small signal ACĬircuit analysis and RF network synthesis. The project also aims toĪdd additional model development tools to those currently available in Qucs-0.0.18. Version of Qucs while attempting to combine some of the best features of other GPL circuit simulation packages. It addresses a number of problems observed with the current Following the release of Qucs-0.0.18 in August 2014 the Qucs Development Team considered in detail a number of possible directions thatįuture versions of the software could take. ![]()
0 Comments
Read More
Leave a Reply. |