Find the expression for the overall system transfer function of the system below. K X(s)±(4 Y(s) | (s+1)(s+2) For what positive values of K is the system stable?

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Antenna Array

An antenna array is a group of antennas joined together and arranged in a regular pattern to form a single antenna capable of producing radiation patterns that individual antennas cannot. As the antennas are constructed as an array, sufficient spacing and phase must be given.