Acoustic wave transmission media delay line having internally di

Details Acoustic wave transmission media delay line having internally di Acoustic wave transmission media delay line having internally di

1991-02-19

1992-12-22

Dzierzynski, Paul M.

Wave transmission lines and networks

Coupling networks

Delay lines including elastic bulk wave propagation means

333151, 310313D, 310326, H03H 930

Patent

active

051736675

ABSTRACT:
A multiple-reflection, long-path wave transmission device is fabricated from a single crystal silicon plate by micromachining straight walled rectangular cavities into the plate to reflect ultrasonic waves along an extended transmission path defined by the rectangular cavities. An input transducer is coupled to the silicon plate to introduce ultrasonic waves into the plate in response to an input signal. The ultrasonic waves travel in the silicon plate along the transmission path defined by the straight walled reflective cavities. An output transducer is similarly coupled to the silicon plate to receive the ultrasonic waves at the completion of the transmission path and to generate an output signal representative thereof. Additional sloped wall cavities are formed in the silicon plate to border the extended transmission path. The sloped wall cavities prevent cross coupling of waves traveling in different portions of the path and absorb energy traveling in undesired directions and modes. The sloped walls may be coated with an absorbing material to enhance absorbtion.

REFERENCES:
patent: 2839731 (1958-06-01), McSkimin
patent: 2907958 (1959-10-01), Skaggs
patent: 3041556 (1959-07-01), Meitzler
patent: 3259858 (1966-07-01), Meitzler
patent: 3475633 (1969-10-01), Stelting
patent: 3522557 (1970-08-01), Duncan et al.
patent: 3581247 (1971-05-01), Belford et al.
patent: 3671887 (1972-06-01), Gibson
patent: 3680008 (1972-07-01), Yamamoto
patent: 3745486 (1973-07-01), Chiron et al.
patent: 3794937 (1974-02-01), Gottlieb et al.
patent: 3798577 (1974-03-01), Kasahara et al.
patent: 3942139 (1976-03-01), Cooper et al.
patent: 4268808 (1981-05-01), Melngailes
patent: 4349794 (1982-09-01), Kagiwada et al.
patent: 4447754 (1984-05-01), Wagers
patent: 4594889 (1986-06-01), Mc Carthy
patent: 4609890 (1986-09-01), Oates et al.
patent: 4684906 (1987-08-01), Yokoyama
patent: 4932255 (1990-06-01), Brace et al.
S. J. Martin, et al., "Sensing Liquids with SH Plate Mode Devices" 1988 Ultrasonics Symposium Proceedings, vol. 1, pp. 607-611.

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