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//Chapter-9 example 14
//=============================================================================
clc;
clear;
//input data
HPBW = 6;//Half power Beamwidth in degrees
//Calculations
NNBW = 2*HPBW;//Null to Null beamwidth in degrees
//HPBW = 70*(lamda/Da);
//(70/HPBW)= (Da/lamda);
Gp = 6.4*(70/HPBW)^2//gain of parabolic reflector
G = 10*log10(Gp)//gain in dB
//Output
mprintf('Gain of parabolic reflector is %3.2f dB\n NNBW of the antenna is %g degrees',G,NNBW);
//=============end of the program==============================================
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