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Diffstat (limited to '3773/CH21/EX21.4/Ex21_4.sce')
| -rw-r--r-- | 3773/CH21/EX21.4/Ex21_4.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/3773/CH21/EX21.4/Ex21_4.sce b/3773/CH21/EX21.4/Ex21_4.sce new file mode 100644 index 000000000..284f31487 --- /dev/null +++ b/3773/CH21/EX21.4/Ex21_4.sce @@ -0,0 +1,18 @@ +//Chapter 21: Antenna Measurements +//Example 21-4.1 +clc; + +//Variable Initialization +D = 1 //Diameter of antenna (m) +f = 10e9 //Frequency (Hz) +c = 3e8 //Speed of light (m/s) + +//Calculations +wave_lt = c/f //Wavelength (m) +hpbw = 70*wave_lt/D //Half power beamwidth (degrees) +mea_dist = 2*(D**2)/wave_lt //Measurement distance (m) +trav_dist = hpbw*%pi*mea_dist/180 //Traverse distance (m) +taper = ((0.5/(trav_dist/2))**2)*(-3) //Amplitude taper (dB) + +//Result +mprintf("The amplitude taper is %.1f dB", taper) |