커패시티브-디제너레이션 이중교차결합 전압제어발진기
이자열, 김해천, 유현규, 이상흥
- 7852165 (2010.12.14)
- 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.
- KSP 제안 키워드
- Oscillation Frequency, Voltage controlled oscillator(VCO), cross-coupled, negative resistance, voltage controlled