APPARATUS AND METHOD FOR FORMING BEAM FOR ENHANCING BEAM-FORMING RESOLUTION

摘要

One embodiment of the present invention relates to an apparatus and a method for forming a beam for enhancing beam-forming resolution, and comprises: a frequency selection step for quasi-randomly selecting driving frequencies for an ultrasonic wave of each channel from at least two candidate frequencies; a phase selection step for setting a phase by considering the wavelength of the driving frequencies that are selected for the ultrasonic wave of each of the channels, and the distance between a physical position of a channel element and a focal point; and a beam-forming signal generation step for generating the ultrasonic wave in accordance with the driving frequencies that are selected for each of the channels and the phase.