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author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
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committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3773/CH8/EX8.4/Ex8_4.sce | |
parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
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diff --git a/3773/CH8/EX8.4/Ex8_4.sce b/3773/CH8/EX8.4/Ex8_4.sce new file mode 100644 index 000000000..ea4a96700 --- /dev/null +++ b/3773/CH8/EX8.4/Ex8_4.sce @@ -0,0 +1,21 @@ +//Chapter 8: Helical Antennas +//Example 8-16.1 +clc; + +//Variable Initialization +gain = 24.0 //Gain (dB) +alpha = 12.7 //Pitch angle (degrees) +c_lambda = 1.05 //Circumference (lambda) +s_lambda = 0.236 //Spacing between turns (lambda) + +//Calculation +D = 10**(gain/10) //Directivity (unitless) +L = D/(12*(c_lambda**2)) //Helix length (lambda) +n = L/s_lambda //Number of turns (unitless) +D = D/4 //Directivity for four 20-turn helixes(unitless) +Ae = D/(4*%pi) //Effective aperture of each helix (lambda^2) + +//Result +mprintf("The Axial length is %.0f lambda",L) +mprintf("\nThe number of turns for the axial length is %d",n) +mprintf("\nThe effective aperture for 20 turns is %.0f lambda square",Ae) |