Multi stage beamforming

Details Multi stage beamforming Multi stage beamforming

2011-03-29

2011-03-29

Le, Long V (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S447000

Reexamination Certificate

active

07914455

ABSTRACT:
Beamforming for N elements in performed in log(N) steps of complexity O(N). The signals measured at each element are treated as a receive beam formed by that element with a beam width equal to the element pattern or the width of the transmit illumination. In each of multiple stages, the number of elements is halved by effectively doubling the pitch. The number of beams formed by each element is doubled by narrowing the beam width by a factor of 2 in sin(θ). Since steering and focusing are separated, a single set of delays are applied to each element signal individually prior to the multi-stage beam forming for each finite depth. The data is in a sector format, but by using two beamforming steps, data in a Vector® format is provided.

REFERENCES:
patent: 5111824 (1992-05-01), Lazenby et al.
patent: 5627799 (1997-05-01), Hoshuyama
patent: 5718230 (1998-02-01), Chapman et al.
patent: 5882307 (1999-03-01), Wright et al.
patent: 6309356 (2001-10-01), Ustuner et al.
patent: 6443896 (2002-09-01), Detmer
patent: 6447452 (2002-09-01), Liu et al.
patent: 6527720 (2003-03-01), Ustuner et al.
patent: 6599245 (2003-07-01), Ma et al.
patent: 6685641 (2004-02-01), Liu
patent: 6806623 (2004-10-01), Petersen et al.
patent: 2006/0241490 (2006-10-01), Lazenby
patent: 2008/0027321 (2008-01-01), Lazenby
“A method for Design of Digital Beamforer With Prescrived Main Beam Width and Sidelobe Level,” Do-hong, Tuan; Russer, Peter, Munich University of Technology, Institute for High-Frequency Engineering, Munich 2003, pp. 789-792.
U.S. Appl. No. 12/240,764, filed Sep. 29, 2008.

Affiliated with

Also associated with

Rating

Multi stage beamforming does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi stage beamforming, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi stage beamforming will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2633634