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+//chapter-7 page 279 example 7.2
+//==============================================================================
+clc;
+clear;
+
+x=3;//O/P incident power from first directional coupler in mW
+y=0.1;//O/P reflected power from second directional coupler in mW
+
+//CALCULATION
+Pi=x*100;//Incident Power in mW
+Pr=y*100;//Reflected Power in mW
+p=sqrt(Pr/Pi);//Reflection Coefficient
+S=((1+p)/(1-p));//Voltage Standing Wave Ratio(VSWR)
+
+//OUTPUT
+mprintf('\nVoltage Standing Wave Ratio(VSWR)in the main waveguide is S=%1.2f \nReflected Power is Pr=%2.0f mW',S,Pr);
+
+//=========================END OF PROGRAM===============================