Voltage controlled oscillator, composite module, and...

Oscillators – Solid state active element oscillator – Transistors

Reexamination Certificate

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C331S1070SL

Reexamination Certificate

active

07109811

ABSTRACT:
A resonant circuit includes a choke coil, a variable-capacitance diode, coupling capacitors, a resonant capacitor, a resonator defining an inductor element, and a bypass capacitor. An amplifying circuit includes a buffer amplifying transistor, an oscillating transistor, bias resistors, Colpitts capacitors, bypass capacitors, a coupling capacitor, a choke coil, a resonant capacitor, and a resonant inductor. A bias resistor has one end electrically connected to the base of the oscillating transistor and has the other end electrically connected to the ground via the resonator having one end electrically grounded.

REFERENCES:
patent: 5347238 (1994-09-01), Kobayashi
patent: 5945884 (1999-08-01), Nakatsuka
patent: 6104255 (2000-08-01), Goma et al.
patent: 11-074727 (1999-03-01), None
patent: 2002-171130 (2002-06-01), None
patent: 2002-359519 (2002-12-01), None
Official Communication issued in corresponding Korean Patent Application 10-2004-0004713, dated May 25, 2006.
English translation of Official Communication issued in the corresponding Korean Patent Application No. 10-2004-0004713, dated May 25, 2006.

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