![]() ![]() The easiest way to create this is with an s-parameter template as show below. This is just a human readable csv file that lists the phase/magnitude(or equivalent representation) of the S11 measurement at every frequency. Once measured you will need to export a ‘touchstone’ s1p file. Congratulation, the first digital simulation is done Figure 1 - Qucs main window A truth table is not the only digital simulation that Qucs can perform. Now the truth table of a two-port AND cell is shown. Place the diagram truth table on it and insert the variable Output. Try to think if you error is likely to be a significant fraction of a wavelength. After performing the simulation, the data display page opens. As normal the accuracy you need for this is dependent upon the required frequency. If we design a matching network it will be assumed that this is where we place our components. We must be very careful to understand the calibration plane of tour antenna. However I will highlight one critical point. In this tutorial, I will explain the workings of a low-pass filter. I won’t go into detail here about how to measure an antenna as this was covered in my previous posts. The Device Under Test could really be any device, but as I am an antenna geek, lets assume its an antenna. Once you get to grips with the basics here, you can always experiment in QUCSstudio with alternate components. However it is possible to use alternative components such as transformers, transmission lines, or even resistors as part of an matching network. Of course, I had totally forgotten!!! But lets go through it again.Ī matching network is normally a network of inductor or capacitors selected to convert from one impedance to another. ![]() Go to examples Examples For an easy start have a look at the QucsStudio example projects. ![]() View Examples For an easy start have a look at the QucsStudio example projects. I was asked in the comments about exactly to do this. Screenshots Get a first impression about QucsStudios feature set in our screenshot and video galery. This could be used to quickly design antenna matching networks for instance. In my last blog post I alluded to the fact that you could take s1p touchstone files generated by nanoVNAsaver and use this to automatically calculate/simulate a matching network in QUCSstudio. ![]()
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