Design a four-element, -40 dB side lobe level Dolph-Tschebyscheff array of isotropic elements placed symmetrically about the z-axis. Find the
(a) amplitude excitation coefficients
(b) array factor
(c) angles where the nulls occur for d = 30 λ/4.
Are all of the minor lobes of the same level? Why not? What needs to be changed to make them of the same level?
Verify parts of the problem using the computer program Arrays.