“…However, the use of such power distribution components is associated with degraded reflection responses of the feeds, stronger coupling effects, increased sensitivity of the entire antenna-feed structure to manufacturing tolerances, as well as degraded radiation pattern of the array [3,4], in particular, due to non-decoupling of the outputs and increased reflection (from the higher-impedance output) [8]. CFs realising predefined non-uniform amplitude excitations of certain linear antenna arrays have been demonstrated for microstrip/stripline [3,9] and waveguide [10] technologies; however, the choice and optimality of the implemented CF architectures was not clarified. At the same time, an importance of full-wave electromagnetic (EM) simulations for tuning and validation has been demonstrated [3,[9][10][11].…”