Voltage-controlled variable frequency oscillation circuit...

Oscillators – Solid state active element oscillator – Transistors

Reexamination Certificate

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Details

C331S109000, C331S183000

Reexamination Certificate

active

08076982

ABSTRACT:
A voltage-controlled variable frequency oscillation circuit, includes: an oscillation circuit section including a resonance circuit which includes a coil and a variable capacitance element, and a negative resistance circuit; and a first resistor connected between the oscillation circuit section and a first one of a pair of terminals of a power supply.

REFERENCES:
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patent: 7301414 (2007-11-01), Hino
patent: 7915966 (2011-03-01), Tokuyama
patent: 2003/0025566 (2003-02-01), Rogers
patent: 2004/0251977 (2004-12-01), Bellaouar et al.
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patent: 2006/0132253 (2006-06-01), Gelhausen et al.
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patent: 2009/0146752 (2009-06-01), O'Day et al.
patent: 2009/0231051 (2009-09-01), Tokuyama
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Nederland Search Report (No. 136644/NL 1036799) issued on Oct. 29, 2009.
Japanese Office Action dated Mar. 29, 2011 for corresponding Japanese application 2008-097064.

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