Journal of Navigation and Port Research (한국항해항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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A Study on Design of Reflector Type Frequency Doubler in K-Band

리플렉터 형태의 K-대역 주파수 체배기 구현에 관한 연구

  • Han, Sok-Kyun (Division of Marine Electronic & Comm. Eng., Mokpo National Maritime University) ;
  • Choi, Hyung-Ha (Division of Marine Electronic & Comm. Eng., Mokpo National Maritime University)
  • 한석균 (목포해양대학교 해양전자ㆍ통신공학과) ;
  • 최병하 (목포해양대학교 해양전자ㆍ통신공학부)
  • Published : 2004.02.01
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Abstract

In this paper, a reflector type frequency doubler for local oscillator at 24GHz is designed and fabricated with ne71300-N MESFET. Optimum source and load impedances are decided through a multiharmonic load pull simulation technique. A conversion gain can be improved using the reflector and fundamental and third harmonics are well suppressed with open stub of $\lambda$/4 length Measured results show output power at 0dBm of input power is -3.776dBm, conversion gain 0.736dB, harmonic suppression 41.064dBc, respectively.

본 논문에서는 고주파 특성이 우수한 NEC사의 ne71300-N MESFET를 이용하여 24GHz 대역 국부발진기용 주파수 체배기를 설계 및 제작하였다. 멀티하모닉 로드 풀 시뮬레이션을 통하여 최적의 고조파 소스ㆍ부하 임피던스를 선택하였다. 리플렉터를 이용하여 변환 이득을 개선할 수 있었고, 대역저지필터를 이용하여 기본파와 3차 고조파 성분을 억제하였다. 측정한 결과 0 dBm의 입력신호에 대해 출력주파수인 24Ghz에서의 출력 전력은 -3.776dBm이고, 변환 이득은 0.736 dBm, 41.064 dBc의 높은 고조파 억압 특성을 얻었다.

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References

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