Acoustic surface wave device with harmonic coupled transducers

Details Acoustic surface wave device with harmonic coupled transducers Acoustic surface wave device with harmonic coupled transducers

1974-03-22

1976-10-19

Borchelt, Archie R.

Wave transmission lines and networks

Coupling networks

With impedance matching

310 98, 333 72, H03H 926, H03H 930, H03H 932, H01L 4108

Patent

active

039873765

ABSTRACT:
Disclosed is an acoustic surface wave device having surface wave transducers coupled to a piezoelectric substrate by harmonic coupling. In one embodiment the device has two transducers, each having a different selected fundamental periodicity and harmonic piezoelectric coupling in a selected range of operating frequencies.

REFERENCES:
patent: 3376572 (1968-04-01), Mayo
patent: 3614463 (1971-10-01), Slobodnik, Jr.
patent: 3727155 (1973-04-01), De Vries
patent: 3742396 (1973-06-01), Bahr et al.
Kuhn-- "Enhanced Harmonic Response of an Interdigital Surface Acoustic Wave Transducer" in IEEE Trans. Electron Devices, June 1971, p. 395.
White et al.-- "Direct Piezoelectric Coupling to Surface Electric Waves" in Applied Physic Letters, vol. 7, No. 12, Dec. 15, 1965, pp. 314-316.
Engan-- "Excitation of Elastic Surface Waves by Spatial Harmonics of Interdigital Transducers" in IEEE Trans. on Electron Devices, vol. ED16, No. 12, Dec. 1969; pp. 1014-1017.

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