Oscillators – With frequency adjusting means – With voltage sensitive capacitor
Patent
1973-04-02
1976-11-02
Kominski, John
Oscillators
With frequency adjusting means
With voltage sensitive capacitor
330 55, 331107A, 331179, H03B 532
Patent
active
039900215
ABSTRACT:
A variable frequency VHF or UHF band oscillator is disclosed. Principal control over the precise location and stability of the frequency of oscillation is provided by a surface wave delay line in the regenerative feedback path of a broadband amplifier. The surface wave delay line is capable of passing substantial energy within each of a plurality of very narrow passbands. Controls are provided for ensuring that at any given time the circuit can oscillate only at the resonant frequency of one of these passbands. Selection of the frequency of oscillation is in accordance with an externally applied digital frequency select signal.
REFERENCES:
patent: 2298085 (1942-10-01), Koerner
patent: 3518586 (1970-06-01), Nilssen et al.
patent: 3755761 (1973-08-01), Hartmann
patent: 3766496 (1973-10-01), Whitehouse
patent: 3805189 (1974-04-01), Zucker et al.
Bomba Steven J.
Hartmann Clinton S.
Tenny Ralph F.
Comfort James T.
Hiller William E.
Kominski John
Levine Harold
Texas Instruments Incorporated
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