What Is a Phased Array?

A phased array is a phase-compensated (or delay-compensated) array that can be used for both receiving and transmitting. Its working principle is to appropriately phase shift (or delay) the signals of the array elements arranged according to a certain rule to obtain the deflection of the array beam, and perform phase (or delay) compensation at the same time in different directions. Get multiple beams. The advantage is that the electrical scanning of the beam can be realized in the space to be observed without using a mechanically rotating base array, which is very convenient and flexible. At the same time, the size of the base array can be made larger to increase the space gain. ^[1]