Oscillators – With frequency adjusting means – With voltage sensitive capacitor
Reexamination Certificate
2007-12-25
2007-12-25
Kinkead, Arnold (Department: 2817)
Oscillators
With frequency adjusting means
With voltage sensitive capacitor
C331S1170FE, C331S167000, C361S091500, C455S188100, C455S188200, C455S191200
Reexamination Certificate
active
11204118
ABSTRACT:
A local oscillating circuit includes an integrated circuit that has an oscillating transistor, protection diodes against electrostatic damage, and first and second terminals each being connected to a base and a collector of the oscillating transistor, cathodes of the protection diodes being respectively connected to the first and second terminals and anodes thereof being connected to a ground; and a resonating circuit that is provided outside the integrated circuit and is connected between the first and second terminals. A reverse-biasing voltage is applied to each of the cathodes of the protection diodes when VHF high-band signals are received while a voltage is not applied to each of the cathodes when VHF low-band signals are received.
REFERENCES:
patent: 2003-179430 (2003-06-01), None
patent: 3105078 (2004-08-01), None
Alps Electric Co. ,Ltd.
Brinks Hofer Gilson & Lione
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