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 Dual Band Directional Coupler with Feedback Compensation Using Diplexer Structure

Diplexer 구조를 이용한 Dual Band 방향성 커플러

  • Kim Ki-Joong (Central R&D Institute, Samsung Electro-Mechanics Co., LTD) ;
  • Park Ja-Young (Central R&D Institute, Samsung Electro-Mechanics Co., LTD) ;
  • Jeong Young-Hak (Central R&D Institute, Samsung Electro-Mechanics Co., LTD) ;
  • Bae Hyo-Gun (Central R&D Institute, Samsung Electro-Mechanics Co., LTD) ;
  • Kim Nam-Heung (Central R&D Institute, Samsung Electro-Mechanics Co., LTD) ;
  • Kim Hak-Sun (Central R&D Institute, Samsung Electro-Mechanics Co., LTD)
  • 김기중 (삼성전기㈜ 중앙연구소) ;
  • 박자영 (삼성전기㈜ 중앙연구소) ;
  • 정영학 (삼성전기㈜ 중앙연구소) ;
  • 배효근 (삼성전기㈜ 중앙연구소) ;
  • 김남흥 (삼성전기㈜ 중앙연구소) ;
  • 김학선 (삼성전기㈜ 중앙연구소)
  • Published : 2005.08.01
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Abstract

In this paper, a novel design and implementation of a dual-band directional coupler based on RF IPD(Integrated Passive Device)-on-glass technology is proposed, which can be adopted in GSM/GPRS cellular phones for closed loop power control at the output of the power amplifier. The proposed coupler has a compensation capacitor to improve the directivity, and was designed using a new diplexing structure to minimize the cross-band isolation.

본 논문은 glass 기판 위에 RE IPD(Integrated Passive Device) 기술을 이용하여 dual band 방향성 커플러의 새로운 설계와 구현을 하였으며, 이러한 구조는 전력 증폭기의 출력부에 closed loop 전력 제 어용 GSM/GPRS cellular phones에 적용할 수 있다. 커플러는 방향성 향상을 위하여 보상 capacitor를 이용하였으며, 상호 밴드의 간섭을 최소화하기 위하여 새로운 방법의 필터링 구조(diplexer)를 갖는 커플러를 구현하였다.

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References

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