Method and apparatus for energizing an array of acoustic transdu

Details Method and apparatus for energizing an array of acoustic transdu Method and apparatus for energizing an array of acoustic transdu

1978-01-23

1979-12-18

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Transmitter systems

With beam forming, shaping, steering, or scanning

343100LE, H04B 102, H04B 1100

Patent

active

041796837

ABSTRACT:
Method and apparatus for energizing an array of acoustic transducer elements to eliminate grating lobes. The apparatus includes a first subarray of N transducer elements arranged along an axis. The apparatus also includes a second subarray of N+1 transducer elements arranged along a second axis parallel to the first axis. One subarray is energized to propagate an acoustic beam having odd grating lobes with positive amplitude and the other subarray is energized to propagate an acoustic beam having odd grating lobes with negative amplitude. The two subarrays are disposed so that the radiated acoustic beams combine together and the odd grating lobes cancel each other.

REFERENCES:
patent: 2768364 (1956-10-01), Camp
patent: 2837728 (1958-06-01), Schuck
patent: 3135944 (1964-06-01), Ehrlich
patent: 3182325 (1965-05-01), Blume
patent: 3478309 (1969-11-01), Massa, Jr.
patent: 4045800 (1977-08-01), Tang et al.
patent: 4065748 (1977-12-01), Maguer et al.

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