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+// chapter 4 example 2
+//-----------------------------------------------------------------------------
+clc;
+clear;
+// given data
+Pi      = 10;           // Input power in mW
+IL      = 0.4;          // insertion loss in dB
+// calculations
+// ILdb)   = 10log(Pi/Po)
+Po      = Pi/(10^(IL/10))  // antilog conversion and coupling power
+
+// Output
+mprintf('Power available at the straight through port output = %3.3f mW',Po);
+//------------------------------------------------------------------------------