Tunable oscillator having a non-reflective saw resonator

Details Tunable oscillator having a non-reflective saw resonator Tunable oscillator having a non-reflective saw resonator

1993-06-30

1994-07-12

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Significant distributed parameter resonator

331 36C, 331177V, 455 76, H03B 532

Patent

active

053292561

ABSTRACT:
A tunable oscillator circuit (200) includes surface acoustic wave transducer (303) disposed on a piezoelectric substrate (301) having a high SAW coupling coefficient. The SAW transducer is (303) non-reflective and self-resonant comprising a pair of electrodes with interdigitated fingers. A tuning mechanism, such as a varactor, is coupled across the transducer allowing for output frequency tuning of the oscillator circuit.

REFERENCES:
patent: 4581592 (1986-04-01), Bennett
patent: 5043681 (1991-08-01), Tanemura et al.

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