AESA 동작원리 - 04

Beam SquintWe opened Part 1 by describing how, when a wavefront approaches an array of elements, there is a time delay between elements based on the wavefront angle θ relative to boresight.For a single frequency, the beam steering can be accomplished by replacing the time delay with a phase shift.This works for narrow-band wave forms, but for wide band wave forms where the beam steering is produced by a phase shift, the beam can shift direction as a function of frequency.This can be intuitively explained if we remember that a time delay is a linear phase shift vs. frequency.Thus, for a give..........

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