3/25/2023 0 Comments Smith chart tutorials![]() The process of plotting admittance is essentially reversed - where adding an inductor to a series circuit would move the impedance value clockwise along a constant resistance circle, a shunt inductor would move it counter-clockwise along a constant admittance circle shunt capacitors similarly move your values clockwise on an admittance chart, where a series capacitor would be counter-clockwise. This is an important step too, as by flipping it over, you now have a chart that will assist you in dealing with shunt components rather than those in series. It is actually surprisingly easy to plot the equivalent chart for admittance - all you have to do is mirror the Chart horizontally. The terms corresponding to resistance and reactance are called conductance and susceptance, respectively. Let's get started by writing the equation for the reflection coefficient of a load impedance, given a source impedance: Once we get past the derivation, there will be a few simplified images showing how those equations can be used and combined to get the final product. That's all the Smith Chart really is: a collection of circles, each one centered in a different place in (or outside) the plot, and each one representing either constant resistance or constant r eactance. By taking the standard reflection coefficient formula and manipulating it so that it provides us with the equations for circles of various radii, we'll be able to construct the basic Smith Chart. That said, even if you don't fully understand the derivation below, you can still use the chart to help you with your own design. Open Circuit: Beginning with open circuit stubs again we must first. In order to understand the construction of the chart, you'll need to understand high school algebra and the basics of complex numbers, as well as have a basic understanding of impedance in electronic circuits. In this example we will be matching a 75 line to a load that has an impedance of 90+j60. The Smith Chart has been in use since the 1930s as a method to solve various RF design problems - notably impedance matching with series and shunt components - and it provides a convenient way to find these solutions without the use of a calculator. This article covers the mathematics behind creating the chart and its physical interpretation. You can add the each point in series Points collection to render the series.Smith Charts are an extremely useful tool for engineers and designers concerned with RF circuits. Public partial class SmithChartSample ) End Sub Public Property Trace1 As ObservableCollection ( Of TransmissionData ) End Class ![]() Add the below assemblies into the project file.Smith chart control can be added through code behind by following the below steps. The below mentioned assemblies will be added automatically into the application.Īppearance and behavior related aspects of the smith chart can be controlled by setting the appropriate properties through the properties grid.įor example, in the below image MinorGridlinesVisible property of radial axis is modified via property grid.Ĭreating a simple smith chart through code Once you drop the control into the designer page, smith chart control will be added successfully along with the required assemblies. Drag and drop the smith chart control from the toolbox into the designer.Create a new Windows Form Application.Smith chart control can be added through designer by following the below steps. Creating a simple smith chart through the designer This section explains the steps required to build an application with Smith chart. ![]() How to install nuget packages Getting Started with Windows Forms Smith Chart (SfSmithChart) Please find more details regarding how to install the nuget packages in windows form application in the below link: Refer control dependencies section to get the list of assemblies or NuGet package needs to be added as reference to use the control in any application. ![]()
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