Beam forming device

Details Beam forming device Beam forming device

1986-02-05

1988-10-25

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Transmitter systems

With beam forming, shaping, steering, or scanning

367 12, 367103, 367905, 367164, H04B 1700, H04R 1700

Patent

active

047808608

ABSTRACT:
The present invention relates to a beam forming device for forming a uniform radiation beam and/or a reception beam. In radiation, the transducer is vibrated in such a way that the pressure of a sound wave produced from each point of the vibrating surface of the transducer is determined based on a weight function, thereby forming a radiation beam. In reception, electric signals are derived based on the sound energy received in a manner that the amplitude level of an electric signal produced based on the sound energy received by each point of the vibrating surface of the transducer is determined based on a weight function, and the derived signals are combined with one another to form a reception beam.

REFERENCES:
patent: 2875355 (1959-02-01), Petermann
patent: 2967957 (1961-01-01), Massa
patent: 3899666 (1975-08-01), Bolger
patent: 3918024 (1975-11-01), Macovski
patent: 4271490 (1981-06-01), Minohara et al.
patent: 4380808 (1983-04-01), Hill et al.
patent: 4423494 (1983-12-01), Groves et al.
patent: 4596007 (1986-06-01), Grall et al.

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