Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2005-04-19
2005-04-19
Mis, David (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
C331S03600C, C331S1170FE, C331S17700V, C331S179000
Reexamination Certificate
active
06882233
ABSTRACT:
The present invention relates to a variable oscillation frequency resonance circuit and voltage controlled oscillator using the same, which includes an inductance element, frequency varying means, and oscillation band varying means. The oscillation band varying means is provided with one or more capacitance element pairs and one or more differential switching element pairs each being arranged between capacitance elements of each of the capacitance element pairs, with differential switching elements of each of the differential switching element pairs being arranged in parallel with each other, to allow a corresponding capacitance element pair to be connected to the inductance element in response to second control signals.
REFERENCES:
patent: 5739730 (1998-04-01), Rotzoll
patent: 5994982 (1999-11-01), Kintis et al.
patent: 6621365 (2003-09-01), Hallivuori et al.
Korean Patent Abstracts -Publication No. 1020020083709, Published Nov. 4, 2002.
Patent Abstracts of Japan -Publication No. 2003-078348, Published Mar. 14, 2003.
Kwon Hyo Seok
Oh Seung Min
Lowe Hauptman & Berner LLP
Mis David
Samsung Electro-Mechanics Co. Ltd.
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