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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2219/CH7/EX7.13/Ex7_13.sce | |
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| -rwxr-xr-x | 2219/CH7/EX7.13/Ex7_13.sce | 22 |
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diff --git a/2219/CH7/EX7.13/Ex7_13.sce b/2219/CH7/EX7.13/Ex7_13.sce new file mode 100755 index 000000000..8cd772783 --- /dev/null +++ b/2219/CH7/EX7.13/Ex7_13.sce @@ -0,0 +1,22 @@ +// chapter 7 example 13
+//-----------------------------------------------------------------------------
+clc;
+clear;
+// given data
+f = 60*10^6; // frequency in Hz
+c = 3*10^8 // velocity of EM wave in m/s
+
+// Calculations
+lamda = c/f; // wavelength in m
+l_dipole= lamda/2 // length of diplole
+// Physical length of antenna is made 5% shorter than desired length as per rule of thumb
+L = l_dipole - (5/100)*l_dipole; // actual physical length
+L_D = L - (4/100)*L; // length of director
+L_R = L + (4/100)*L; // length of reflector
+DDS = 0.12*lamda; // director dipole spacing
+RDS = 0.2*lamda; // Reflector dipole spacing
+
+// Output
+mprintf('Length of dipole = %3.3f m\n length of Director = %3.2f m\n length of Reflector = %3.2f m\n director dipole spacing = %3.1f m\n Reflector dipole spacing = %3.1f m',L,L_D,L_R,DDS,RDS);
+//------------------------------------------------------------------------------
+
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