Plural supply path acoustic surface wave device

Details Plural supply path acoustic surface wave device Plural supply path acoustic surface wave device

1977-07-21

1979-07-10

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

Delay lines including elastic surface wave propagation means

310313, 333154, 333194, 333195, H03H 904, H03H 930, H03H 932, H01L 4110

Patent

active

041609638

ABSTRACT:
An acoustic surface wave device wherein an interdigital transducer is provided which includes interdigitated electrodes of narrow width and fine spacing extending from parallel bus bars. Means are provided electrically to interconnect members of a set of electrodes at a location spaced from the bus bar from which they extend to provide multiple current paths between the bus bar and metallization elements forming the electrodes. In one embodiment, apodized electrodes are interconnected adjacent ends of electrodes of the opposite set. In split electrode transducers, the electrodes of each pair are also interconnected at the ends opposite the associated bus bar.

REFERENCES:
patent: 3984791 (1976-10-01), Deacon
patent: 4023124 (1977-05-01), Parker et al.
Mason et al., "Physical Acoustics", vol. VII, 1970, Academic Press, New York and London; title page and pp. 226-233.
Brady et al., "Generation of High Frequency Acoustic Surface Waves on Piezoelectric Wafers" in IBM Tech. Disclosure Bulletin, vol. 15, No. 10, Mar. 1973, pp. 3273-3274.

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