The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Design and Fabrication of a 0.18μm CMOS Colpitts Type Voltage Controlled Oscillator with a Cascode Current Source

0.18μm NMOS 캐스코드 전류원 구조의 2.4GHz 콜피츠 전압제어발진기 설계 및 제작

  • Received : 2010.07.14
  • Accepted : 2010.10.23
  • Published : 2010.12.01
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Abstract

In this paper a 2.4GHz CMOS colpitts type microwave oscillator was designed and fabricated using H-spice and Cadence Spetre. There are 140MHz 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 2.173GHz and -5.53dBm.

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References

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