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0.18㎛ NMOS 캐스코드 전류원 구조의 2.4㎓ 콜피츠 전압제어발진기 설계 및 제작
김종범(Jong-Bum Kim),유정호(Chong-Ho You),최혁산(Hyuk-San Choi),황인갑(In-Gab Hwang) 대한전기학회 2010 전기학회논문지 Vol.59 No.12
In this paper a 2.4㎓ CMOS colpitts type microwave oscillator was designed and fabricated using H-spice and Cadence Spetre. There are 140㎒ difference between the oscillation frequency and the resonance frequency of a tank circuit of the designed oscillator. The difference is seemed to be due to the parasitic component of the transistor. The inductors used in this design are the spiral inductors proposed in other papers. Cascode current source was used as a bias circuit of a oscillator and the output transistor of the current source is used as the oscillation transistor. A common drain buffer amplifier was used at the output of the oscillator. The measured oscillation frequency and output power of the oscillator are 2.173㎓ and -5.53㏈m.