Phase weighted acoustic reflective array compressor

Details Phase weighted acoustic reflective array compressor Phase weighted acoustic reflective array compressor

1977-09-19

1979-03-27

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333196, 333153, H03H 926, H03H 932, H03H 904, H01L 4110

Patent

active

041468520

ABSTRACT:
An acoustic surface wave signal transmission device includes a medium having a surface suitable for propagating acoustic energy or waves and having a first impedance characteristic. The surface of the medium includes an array of periodic discontinuities of a second impedance characteristic. The widths of the discontinuities vary in a predetermined manner to reflect a portion of said acoustic energy in proportion to the widths of the discontinuities. A transmitting transducer on said surface converts an input electrical signal into corresponding acoustic energy or waves and launches the energy or waves on said medium toward said array of discontinuities. The acoustic energy is reflected from said array of discontinuities toward a receiving transducer which converts the reflected acoustic energy or waves into a corresponding electrical signal.

REFERENCES:
patent: 3931598 (1976-01-01), Bongianni
patent: 4055820 (1977-10-01), Solie

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