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+//Caption:Calculate the SWR of the transmission line
+//Exa:7.1
+clc;
+clear;
+close;
+//Given:
+c=3*10^10;//in cm/s
+a=4;//in cm
+b=2.5;//in cm
+f=10*10^9;//in Hz
+d=0.1;//distance between 2 minimum power points(in cm)
+//For TE10 mode:
+wl_c=2*a;
+wl_o=c/f;
+wl_g=wl_o/sqrt(1-(wl_o/wl_c)^2);
+S=wl_g/(%pi*d);
+disp(S,'Voltage standing wave ratio =');
+\ No newline at end of file