Plural saw oscillators producing combined high frequency output

Details Plural saw oscillators producing combined high frequency output Plural saw oscillators producing combined high frequency output

1993-12-02

1994-12-13

Grimm, Siegfried H.

Oscillators

Polyphase output

331 56, 331 76, 331107A, H03B 536

Patent

active

053732600

ABSTRACT:
A surface acoustic wave resonator has a plural number N of interdigital transducers arranged in a sequence on a piezoelectric substrate to generate N surface acoustic wave signals with a predetermined frequency f.sub.0 and having phase difference of 2.pi./N radian therebetween. Oscillation circuits are individually connected to the N interdigital transducers and generate N oscillation signals with the same frequency f.sub.0 and having phase difference of 2.pi./N radian therebetween. These oscillation signals are multiplied together to generate a signal with frequency N times the predetermined frequency f.sub.0.

REFERENCES:
patent: 5016260 (1991-05-01), Masuda
patent: 5180994 (1993-01-01), Martin et al.

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