Question

4.14 Antenna Gain Pattern. The gain Gof a certain microwave dish antenna can be expressed as a function of angle by the equation TT TT GO) Isinc(40) for 2 2 Where q is measured in radians from the boresight of the dish, and sinc(x)=sin(x)/x. Plot this gain function on a polar plot with the title "Antenna Gain vs 0" in bold face.

Answer 1

Solution:

MATLAB code for Antenna gain pattern.

theta=(pi/100)*(-100:1:100);
A_gain=abs(sin(4*theta)./(4*theta));
set(gcf,'color','white')
polar(theta,A_gain)
title('Antenna Gain vs \theta','Fontweight','Bold','Fontsize',30)

MATLAB output: (in Polar plot)

Antenna Gain vs e 90 1 60 120 150 0.5 30 180 0 330 210 240 300 270

Command with output plot:

Emy_scriptMAT LAB. m RUN Vars [1x201 [1x201 [1x101 [1x201 theta=(pi/100) * ( -100 :1 :10e); A_gain=abs(sin (4*theta)./(4 theta)); set(gcf, 'color', 'white') polar (theta,A_gain) title('Antenna Gain vs \theta','Fontweight','Bold', ' Fontsize',30) 3 4 5 6 octave:16> source( "my_scriptMATLAB.m") Antenna Gain vs 0 08 1 120 60 150 0.5 30 180 0 210 330 240 300 270