Acoustic surface wave resonator device

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices

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Details

310313B, 310313D, 333195, H01L 4108

Patent

active

046833943

ABSTRACT:
An acoustic surface wave resonator element has first and second interdigital electrodes consisting of pairs of opposed interleaving comb-shaped electrodes formed on one major surface of a piezoelectric substrate and arrayed along an acoustic wave propagation direction on the piezoelectric substrate, and acoustic surface wave reflectors sandwiching the first and second interdigital electrodes along the acoustic surface wave propagation direction. A base has the resonator element mounted thereon. First and second lead terminals are formed on the base and are electrically connected to the pair comb-shaped electrodes constituting the first interdigital electrode. A third lead terminal is electrically connected to one of the pair comb-shaped electrodes constituting the second interdigital electrode. The distance between the first and third lead terminals is substantially equal to that between the second and third lead terminals.

REFERENCES:
patent: 3885173 (1975-05-01), Lee
patent: 4047129 (1977-09-01), Ishiyama
patent: 4250473 (1981-02-01), Gemba
patent: 4382386 (1983-05-01), Coussot et al.
patent: 4423395 (1983-12-01), Shirahama
patent: 4438417 (1984-03-01), Yamashita et al.
patent: 4472652 (1984-09-01), Brice et al.

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