Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Design of A Power Oscillator Using Spiral Resonator

나선형 공진기를 이용한 고출력 발진기의 설계

  • 구자경 (순천향대학교 대학원 전기통신시스템공학과) ;
  • 임종식 (순천향대학교 전기통신공학과) ;
  • 이준 (순천향대학교 대학원 전기통신시스템공학과) ;
  • 이재훈 (순천향대학교 대학원 전기통신시스템공학과) ;
  • 한상민 (순천향대학교) ;
  • 안달 (순천향대학교 전기통신공학과)
  • Received : 2010.08.10
  • Accepted : 2010.10.15
  • Published : 2010.10.31
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Abstract

This paper presents a design of high power oscillator using a spiral resonator and high power transistor with measurement. Even lots of drawbacks are known in design of oscillators using high power transistors, the spiral resonator is adopted because it has relatively high Q out of planar resonators. The designed power oscillator at 1.8GHz is fabricated and tested. Measurement shows the obtained output power is 23.5dBm at 1.74GHz with -146.76dBc/Hz of phase noise at 1MHz offset. In addition, it is illustrated that the frequency stability is excellent with the shift less than 1MHz and the measured maximum output power is around 24dBm when the bias voltages are adjusted.

본 논문에서는 나선형 공진기와 고출력 트랜지스터를 이용하여 고출력 발진기를 설계 측정한 결과를 기술하고 있다. 고출력 트랜지스터가 발진기 설계에 단점이 많음에도 불구하고 평면형 공진기 가운데에서 상대적으로 Q가 높다는 장점을 지닌 나선형 공진기가 고출력 발진기 설계에 이용될 수 있음을 보인다. 1.8GHz 주파수 대역에서 고출력 발진기를 설계하여 측정한 결과, 1.74GHz에서 23.5dBm의 출력전력과 1MHz offset에서 -146.76dBc/Hz의 위상 잡음 특성을 얻었음을 보인다. 또한 바이어스 전압에 따른 발진 주파수와 출력을 측정한 결과, 주파수 천이가 1MHz 이내이고 출력이 최대 24dBm 정도인 특성을 얻었다.

Keywords

References

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