Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2008-05-02
2010-12-14
Pascal, Robert (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
Reexamination Certificate
active
07852165
ABSTRACT:
A capacitive-degeneration double cross-coupled voltage-controlled oscillator is provided. The capacitive-degeneration double cross-coupled voltage-controlled oscillator includes a main cross-coupled oscillating unit including an oscillation transistor pair cross-coupled to first and second output nodes of a resonating unit to perform an oscillation operation; and an auxiliary cross-coupled oscillating unit including a positive-feedback transistor pair cross-coupled to the first and second output nodes and the transistor pair of the main cross-coupled oscillating unit and a degeneration capacitance connected between emitters of the positive-feedback transistor pair so as to increase a negative resistance of the main cross-coupled oscillating unit. Accordingly, it is possible to increase a maximum attainable oscillation frequency and to decrease an input capacitance.
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Kim Hae Cheon
Lee Ja Yol
Lee Sang Heung
Yu Hyun Kyu
Electronics and Telecommunications Research Institute
Johnson Ryan
Pascal Robert
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