Saw oscillator with attenuator for protecting saw element

Details Saw oscillator with attenuator for protecting saw element Saw oscillator with attenuator for protecting saw element

1987-11-19

1989-01-17

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Significant distributed parameter resonator

331108B, H03B 530

Patent

active

047990295

ABSTRACT:
An oscillator with a surface acoustic wave filter connected in its feedback path. The oscillator includes an attenuator in the feedback path for attenuating to a predetermined level an oscillating signal fed back to the surface acoustic wave filter from an amplifier used to excite the oscillation. The attenuation is sufficient to prevent damage to the acoustic wave filter.

REFERENCES:
patent: 4581592 (1986-04-01), Bennett
Dragonetti et al, Proceedings of the 1980 IEEE International Symposium on Circuits and Systems, Houston, Tex., 28-30 Apr. 1980, pp. 718-722.
Das et al, 1976 Ultrasonics Symposium Proceedings, IEEE, Annapolis, Md., 29 Sep.-1 Oct. 1976, pp. 306-308.
Dodson et al, 1980 Ultrasonics Symposium Proceedings, IEEE, Boston, Mass., 5-7 Nov. 1980, pp. 268-271.
Leja, 1979 Ultrasonics Symposium, IEEE, New Orleans, La., 26-28 Sep. 1979, pp. 865-869.
Eschler et al, Proceedings of the 32nd Annual Symposium on Frequency Control 1978, Atlantic City, NJ, 31 May-2 Jun. 1978, pp. 58-65.

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