Communications: directive radio wave systems and devices (e.g. – Directive – Utilizing correlation techniques
Patent
1987-06-30
1989-01-31
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Utilizing correlation techniques
310335, 364821, G01S 316, H01L 4104, G06G 712
Patent
active
048019410
ABSTRACT:
A bulk acoustic wave angle-of-arrival processor in which a bulk acoustic body having the property of conducting bulk acoustic wave beams has formed and defined thereon at acoustically reflecting and focusing surface, the acoustically reflecting surfaces including a portion of one concave inward surface, positioned to receive acoustic beams launched from an input transducer.
The body has at least one output transducer set, and each has a plurality of juxtaposed directed finger-electrodes aligned in a row perpendicular to the long direction of the electrodes, and positioned to receive steered beams from at least one of the reflecting surfaces.
An input transducer set is positioned upon one surface of the body to steer beams into the body toward at least one of the reflecting and focusing surfaces.
The input transducer set has individual electrodes on its outer surface which are positioned and spaced to the same pattern as the respective antennas to which they are attached. Between each electrode of the input set and the bulk acoustic wave body is a piezoelectric transducer.
The transducer electrodes have spacings, that are proportional to the corresponding spacings, that are the same as the spacing of the antennas to which they are attached.
REFERENCES:
patent: 3878520 (1975-04-01), Wright et al.
patent: 4329876 (1982-05-01), Chen et al.
patent: 4349794 (1982-09-01), Kagiwada et al.
patent: 4385255 (1983-05-01), Yamaguchi et al.
patent: 4390247 (1983-06-01), Freyre
patent: 4523293 (1985-06-01), Auld et al.
patent: 4542653 (1985-09-01), Liu
patent: 4604543 (1986-08-01), Hachiouji
patent: 4608569 (1986-08-01), Dickey, Jr. et al.
patent: 4609890 (1986-09-01), Oates et al.
patent: 4634230 (1987-01-01), Spezio
patent: 4643028 (1987-02-01), Kunitachi et al.
patent: 4644795 (1987-02-01), Brothell
patent: 4662223 (1987-05-01), Riley et al.
"Beam Scanning and Focussing of Bulk Acoustic Waves", by F. Sabet-Peyman, R. T. Weverka, I. C. Chang and P. Katzka, 1984 IEEE Ultrasonics Symposium, pp. 424-429.
"Diffraction and Detection of Bulk Acoustic Waves", by F. Sabet-Peyman and I. C. Chang, Proceedings of SPIE-The International Society For Optical Engineering, pp. 58-65, Optical Technology For Microwave Applications, Shi-Kay Yao, Editor, Apr. 9-10, 1985, Arlington, Va.
"Focused Acoustic Wave Channelizer", by Dennis R. Pope, Andrew M. Bardos, Marc H. Popek, and Manhar L. Stah, Proceedings of SPIE-Tme International Society for Optical Engineering, Dennis R. Pope, Editor, 3-4 Apr. 1986, Orlando, Fla.
Blum Theodore M.
Brown Roy L.
Cain David
Litton Systems Inc.
LandOfFree
Angle of arrival processor using bulk acoustic waves does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Angle of arrival processor using bulk acoustic waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Angle of arrival processor using bulk acoustic waves will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-179915