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+//Chapter 3, Problem 1, Figure 3.4
+clc
+//https://atoms.scilab.org/toolboxes/microwave
+//Download and install the Microwave toolbox from above link and load it from scilab menubar > Toolboxes > microwave
+
+
+//Plot the smith chart 
+uW_display_smith([.2 .5 1 2 5],12);
+Z=[0.7-%i*0.2 0.7+%i*0.3 0.3-%i*0.5 0.3+%i*0.3]                 //impedances in matrix form
+
+R2=0
+plot2d(real(R2),imag(R2),-1);
+
+for n=1:length(Z)
+    Z1=50*Z(n)
+    G=(Z1-50)/(Z1+50);
+plot2d(real(G), imag(G),-8);
+xtitle("Smith Chart");
+end;
+