Surface wave dispersive acoustic delay line

Details Surface wave dispersive acoustic delay line Surface wave dispersive acoustic delay line

1982-09-27

1984-10-16

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including elastic surface wave propagation means

333154, 310313D, H03H 944

Patent

active

044777841

ABSTRACT:
A dispersive acoustic delay line using reflection on slanted gratings is provided. This device comprises slanting input and output transducers each formed of pair electrode fingers. The interval of the electrodes of different polarity varying from nv/2f.sub.min to nv/2f.sub.max, where v is the speed of the waves, f.sub.min and f.sub.max the endmost frequencies of the frequency band and n the number of the harmonic on which the transducers operate. The interval of the gratings varies from kv/f.sub.min to kv/f.sub.max, where k is the number of the operating harmonic of the network, with n.noteq.k.

REFERENCES:
patent: 3975697 (1976-08-01), Paige

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