Transmit-receive transducer array and ultrasonic imaging system

Details Transmit-receive transducer array and ultrasonic imaging system Transmit-receive transducer array and ultrasonic imaging system

1978-03-09

1979-12-25

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Acoustic image conversion

73626, 343100LE, 128660, 367122, G01S 966

Patent

active

041807928

ABSTRACT:
A linear transducer array with low overall side lobe sensitivity for use in steered beam imagers has a different interelement spacing for transmit than for receive, and preferably has a shorter transmit array with elements spaced at one-half wavelength as the center portion of a longer receive array whose unit elements are spaced at a full wavelength. Two or more elements in the center portion can be coupled together to a receiving channel to maintain constant spacing for the receive aperture in a 100% active transducer.

REFERENCES:
patent: 3999422 (1976-12-01), Lehmann et al.
patent: 4023172 (1977-05-01), Schmitt
Endoh et al., Bull. P.M.E. (T.I.T.), No. 37, Mar. 1976, pp. 1-6.
Cottony, IEEE Trans. on Antennas and Propagation, vol. AP-18, No. 6, Nov. 1970.

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