Tunable crystal oscillator with harmonic output

Details Tunable crystal oscillator with harmonic output Tunable crystal oscillator with harmonic output

1996-06-20

1998-01-27

Grimm, Siegfried H.

Oscillators

Combined with particular output coupling network

Space discharge or unilaterally conductive device in output...

331 77, 331116R, 331158, 331177V, H03B 536, H03B 104

Patent

active

057125961

ABSTRACT:
In an oscillator arrangement (VCXO), an oscillation loop (OSL) oscillates at, approximately, the fundamental frequency of a crystal (XTL) included therein. The output signal (Sosc) of the oscillator arrangement (VCXO) is a harmonic extracted from the oscillation loop (OSL). To vary the frequency of the output signal (Sosc), a tuning circuit (VAR) is included in the oscillation loop (OSL). A stage (FIL) in the oscillator arrangement (VCXO) prevents harmonic feedback into the oscillation loop (OSL). Such an oscillator arrangement (VCXO) can be tuned over a relatively large frequency range and has a monotonous tuning characteristic.

REFERENCES:
patent: 2915708 (1959-12-01), Mohler
patent: 3382447 (1968-05-01), Racy
patent: 3528032 (1970-09-01), Tahmisian, Jr. et al.
patent: 5309116 (1994-05-01), Stone

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