Method of fabricating composite electrical transducers

Details Method of fabricating composite electrical transducers Method of fabricating composite electrical transducers

G - Physics

10

K

356/200, 349/67.

G10K 11/34 (2006.01) B06B 1/06 (2006.01) H01L 41/00 (2006.01) H01L 41/22 (2006.01)

Patent

CA 1225468

11 Abstract of the disclosure "Method for fabricating composite transducers". A simplified method for fabricating composite transducers by bonding together plates of active (12, 14, 16, 18) and passive (11, 13, 15, 17, 19) materials to form a laminated block (10). The active material is preferably a piezoelectric ceramic. Thereafter, a series of cuts are made in the laminated block to obtain a laminated plate (20) wherein strips (22, 24, 26, 28) of active material are separated from one another by strips (21, 22, 25, 27, 29) of passive material. Laminated plates (20a, 20b, 20c, 20d) and plates (31, 32, 33, 34, 35) of passive material are bonded together to form a block (30) of composite material from which transducers can be cut. Each transducer com- prises a matrix of isolated active regions surrounded by passive material. The method provides composite transducers having fine structures which can be produced without the difficulty of assembling many small rods or sawing deep, narrow grooves.

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