Bifurcated electro-acoustic delay lines having transducers bonde

Details Bifurcated electro-acoustic delay lines having transducers bonde Bifurcated electro-acoustic delay lines having transducers bonde

1983-04-22

1984-12-11

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including elastic bulk wave propagation means

333143, 333147, 333149, H03H 936, H03H 9125

Patent

active

044881274

ABSTRACT:
A bifurcated electroacoustic delay line exhibits at least a pair of substantially identical branches, each assuming a generally pentagonal profile. Each branch is configured to provide (2n+3) reflections of a desired wave at five reflective facets. The reflective pattern so defined tends to maximize the surface area available for the deposition of absorbent material so as to thereby and otherwise minimize spurious transmissions.
The branches are physically joined along one side so as to define an area of bifurcation. A plurality of piezoelectric transducers are bonded at the area of bifurcation in a pairwise laterally adjacent manner. An inductance couples electrical energy from the output transducer of the first branch to the input transducer of the second branch.

REFERENCES:
patent: 2781494 (1957-02-01), Geoghegan
patent: 3025479 (1962-03-01), Wolfskill

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