blob: 760550a2e88ab18be56ff3c9f74520d120dc486e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
//Chapter 7: Loop, Slot and Horn Antennas
//Example 7-11.1
clc;
//Variable Initialization
c =%pi //Circumference (m)
f1 = 1 //Frequency (MHz)
f2 = 10 //Frequency (MHz)
d = 10e-3 //Diameter of copper wire (m)
//Calculation
RL_Rr1 = 3430/((c**3)*(f1**3.5)*d)
RL_Rr2 = 3430/((c**3)*(f2**3.5)*d) //Ratio of Loss resistance and radiation resistance (unitless)
k1 = 1/(1+RL_Rr1) //Radiation efficiency (unitless)
k_db1 = 10*log10(k1) //Radiation efficiency (in dB)
k2 = 1/(1+RL_Rr2) //Radiation efficiency (unitless)
k_db2 = 10*log10(k2) //Radiation efficiency (in dB)
//Result
mprintf("The radiation efficiency for 1 MHz is %.1ef or %.1f dB",k1, k_db1)
mprintf("\nThe radiation efficiency for 10 MHz is %.2f or %.1f dB",k2, k_db2)
|
