Voltage-controlled oscillator, composite module, and...

Details Voltage-controlled oscillator, composite module, and... Voltage-controlled oscillator, composite module, and...

2006-11-28

2006-11-28

Chang, Joseph (Department: 2817)

Oscillators

Solid state active element oscillator

Significant distributed parameter resonator

C331S1170FE

Reexamination Certificate

active

07142067

ABSTRACT:
A voltage controlled oscillator includes a resonant circuit having a choke coil, a variable-capacitance diode, coupling capacitors, a resonant capacitor, a resonator, 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 which is an inductor element. 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 resonant inductor having one end electrically grounded.

REFERENCES:
patent: 5347238 (1994-09-01), Kobayashi
patent: 5576667 (1996-11-01), Goma
patent: 5945884 (1999-08-01), Nakatsuka
patent: 2002/0000887 (2002-01-01), Nakano 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 the corresponding Korean Patent Application No. 10-2004-0004712, dated May 25, 2006.

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