Question 1: A six-element linear array excited with equal phase and a uniform amplitude distribution with inter-element spacing equals to 34 ? . Determine the half-power beamwidth and plot the normalised array factor using Matlab.

Question 2: Plot the normalized radiation intensity ??(????) for a uniformly illuminated aperture of length ????????=15???? using Matlab, and determine the beamwidth between first nulls in the xz plane.

Question 3 : An eight-element linear array with ?/4 spacing is excited with equal amplitudes. To steer the main beam to a direction 40 below the broadside direction, what should be the incremental phase delay between adjacent elements? Also, give the expression for the array factor and use Matlab to plot the pattern