Surface wave acoustic device with compensation for spurious freq

Details Surface wave acoustic device with compensation for spurious freq Surface wave acoustic device with compensation for spurious freq

1981-06-22

1983-03-01

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333151, 333153, 333195, H03H 942, H03H 964

Patent

active

043756247

ABSTRACT:
A surface wave acoustic filter is compensated for diffraction and other spurious effects, which distort its frequency response, by adding an auxiliary acoustic channel which is in parallel with the primary acoustic channel, is out of phase therewith, and mimics the frequency response of the primary channel to the diffracted or other spurious wave.

REFERENCES:
patent: 3810257 (1974-05-01), Jones et al.
patent: 4004254 (1977-01-01), DeVries
patent: 4342011 (1982-07-01), Iwamoto et al.
DeVries, "Spurious Coupling Between Length-Weighted Transducers Acoustically Connected by Means of a Multistrip Coupler", Electronics Letters, May 16, 1974, vol. 10, No. 9, pp. 172-173.

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