The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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A Novel Design of Frequency Multiplier Using Feedforward Technique and Defected Ground Structure

Feedforward와 Defected Ground Structure를 이용한 주파수 체배기 설계

  • Park Sang-Keun (Department of Information & Communication Engineering, Chonbuk National University) ;
  • Lim Jong-Sik (Division of Information Technology Engineering, Soonchunhyang University) ;
  • Jeong Yong-Chae (Department of Information & Communication Engineering, Chonbuk National University) ;
  • Kim Chul-Dong (Sewon Teletech Inc.)
  • 박상근 (전북대학교 정보통신공학과) ;
  • 임종식 (순천향대학교 정보기술공학부) ;
  • 정용채 (전북대학교 정보통신공학과) ;
  • 김철동 (㈜세원텔레텍)
  • Published : 2006.08.01
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Abstract

A novel design of frequency multiplier using a feedforward technique and a defected ground structure(DGS) is proposed. The feedforward loop in the proposed frequency multiplier suppresses the fundamental component $(f_0)$, the dumb-bell or spiral shaped DGS diminish unwanted harmonics such as second, third and fourth. Due to the combination of the feedforward structure and the DGS, only the multiplied frequency component$(2f_0,\;3f_0,\;4f_0)$ appears at the output port and the other unwanted components are suppressed excellently. The frequency multiplier is designed at 1 GHz $(f_0)$, by the proposed technique and measured. The measured output power of $2f_0,\;3f_0$ and $4f_0$ is -2.59 dBm, -5.36dBm and -4.57dBm, respectively, when the input power is 0dBm.

Feedforward와 defected ground structure(DGS)를 이용한 새로운 주파수 체배기를 제안하였다. 제한된 주파수 체배기는 feedforward 구조에 의해 기본 주파수$(f_0)$가 제거되고, 아령 또는 나선형 모양의 DGS 구조에 의해 2차, 3차 또는 4차의 원하지 않는 고조파 성분들을 제거할 수 있었다. 결국 feedforward와 DGS 구조에 의해서 체배하고자 하는 성분을 제외한 나머지 고조파들이 제거되었다. 기본 주파수를 1 GHz로 하여 주파수 체배기를 설계하고, 측정하였다. 입력 전력을 0dBm으로 하였을 때 2체배기, 3체배기와 4체배기의 출력 전력은 각각 -2.59 dBm, -5.36 dBm과 -4.57 dBm이었다.

Keywords

References

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