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//Chapter 4: Radiation
//Example 4-5.2
clc;
//Variable Initialization
L = 5 //Length of radiating element (m)
f1 = 30e3 //Frequency (Hz)
f2 = 30e6 //Frequency (Hz)
f3 = 15e6 //Frequency (Hz)
c = 3e8 //Velocity of light (m/s)
//Calculation
wave_lt1 = c/f1 //Wavelength (m)
wave_lt1 = wave_lt1 /10
R_r1 = 800*(L/wave_lt1)**2 //Radiation resistance (ohm)
wave_lt2 = c/f2 //Wavelength (m)
L = wave_lt2/2 //Effective length (m)
R_r2 = 200*(L/wave_lt2)**2 //Radiation resistance (ohm)
wave_lt3 = c/f3 //Wavelength (m)
L = wave_lt3/4 //Effective length (m)
R_r3 = 400*(L/wave_lt3)**2 //Radiation resistance (ohm)
//Result
mprintf("The radiation resistance for f1 is %.2f ohms", R_r1)
mprintf("\nThe radiation resistance for f2 is %d ohms",R_r2)
mprintf("\nThe radiation resistance for f3 is %d ohms",R_r3)
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