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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3446/CH10/EX10.5/Ex10_5.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '3446/CH10/EX10.5/Ex10_5.sce')
| -rw-r--r-- | 3446/CH10/EX10.5/Ex10_5.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/3446/CH10/EX10.5/Ex10_5.sce b/3446/CH10/EX10.5/Ex10_5.sce new file mode 100644 index 000000000..0f6e2552a --- /dev/null +++ b/3446/CH10/EX10.5/Ex10_5.sce @@ -0,0 +1,23 @@ +// Exa 10.5
+// To calculate the optimum diameter (DH), spacing (S) for the antenna and total length of the antenna,
+// To calculate the antenna gain,
+// To calculate the beam width of the antenna.
+
+clc;
+clear all;
+
+N=12; //number of turns
+fr=1.8; //frequency in GHz
+
+//solution
+lamda=3*10^8/(fr*10^9);
+DH=lamda/%pi;// diameter of helix in milli-meters
+S=lamda/4;//turn spacing in millimetres
+L=N*S;
+G=15*N*S*(DH*%pi)^2/lamda^3;
+Theta=52*lamda/(%pi*DH)*sqrt(lamda/(N*S));
+printf('The optimim diameter is %d mm\n ',DH*1000);
+printf('Spacing is %.1f mm\n ',S*1000);
+printf('Total Length of antenna is %d mm\n ',L*1000);
+printf('The antenna gain is %.1f dBi\n ',10*log10(G));
+printf('The BeamWidth of antenna is %d degrees \n ',Theta);
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