SONG, TAI KYONG,송태경,LEE, GUN HO,이건호,KANG, JEE UN,강지운,SONG, TAI KYONGKR,LEE, GUN HOKR,KANG, JEE UNKR
申请号：
KR1020140177785
公开号：
KR1020160070603A
申请日:
2014.12.10
申请国别(地区):
KR
年份:
2016
代理人:
摘要：
The present invention relates to a beamformer and a beamforming method based on post phase rotation, and more specifically, to a beamformer and a beamforming method based on post phase rotation. The beamformer includes: by each channel, a sampling unit sampling a signal reflected from an image point and received in a converter into a digital signal； a mixer unit separating an in-phase component and a quadrature component from the sampled digital signal； a low pass filter unit filtering the in-phase component signal and the quadrature component signal which are separated； a sampling delay compensating unit compensating a coarse delay time with respect to the in-phase component signal and the quadrature component signal； a decimation unit reducing the amounts of data on the in-phase component signal and the quadrature component signal in which the coarse delay time is compensated； a demultiplexer unit receiving the decimated in-phase component signal and quadrature component signal, selecting a certain phase rotator among a plurality of phase rotators having different fine delay time compensation values with respect to the received in-phase component signal and quadrature component signal, and outputting the decimated in-phase component signal and quadrature component signal to the selected phase rotator. The beamformer further includes a phase rotator unit including the plurality of phase rotators summing the output signal of the demultiplexer unit by each channel which requires the same fine delay time compensation, and then performing phase rotation. By such a configuration, the beamformer and the beamforming method based on post phase rotation can perform phase rotation for a signal outputted through each channel at one time even when the number of channels used is increased, thus reducing increases in computing speed and implementation costs.본 발명은 후치 기반 위상 회전을 수행하는 빔 집속기 및 빔 집속 방법에 관한 것으로서, 보다 바람직하게는 영상점으로부터 반사되어 변환자로 수신된 신호를 디지털 신호로 표본화하는 표본화부； 상기 표본화된 디지털 신호로부터
