Definitions for "Phased array"
radar which operates by electronically scanning the beam in one or both axes while the antenna remains stationary
Radar which scans the beam electronically in 1 or 2 axis while the antenna remains
It is a radar antenna which consists of an array of dipoles in or out of phase with one another inorder to control the beam direction and radiation pattern without actually moving the antenna.
Keywords:  diffraction, slit, example
an example of N-slit diffraction