Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
권호 표지

Design of MLC chip quadrature hybrid for 2 GHz band mobile communications

2 GHz대 이동 통신용 MLC 칩 90$^{\circ}$ 하이브리드 설계

  • 심성훈 (한국과학기술연구원 박막기술연구센터) ;
  • 강종윤 (한국과학기술연구원 박막기술연구센터) ;
  • 윤석진 (한국과학기술연구원 박막기술연구센터) ;
  • 신현용 (남서울대학교 전자정보통신공학부) ;
  • 윤영중 (연세대학교 전기전자공학과) ;
  • 김현재 (연세대학교 전기전자공학과)
  • Published : 2002.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents the design method and performance characteristics of a chip-type quadrature hybrid using LTCC-MLC technology. The design method for a chip-type quadrature hybrid is based on lumped element equivalent circuit of quarter-wave transformer. The chip-type quadrature hybrid was miniaturized to a greater extent using multilayer structure and lumped element. The proposed design method can also reduce the undesirable parasitic effects of the chip-type quadrature hybrid. The proposed chip-type quadrature hybrid was designed and fabricated using the proposed design method and the equivalent circuit model of a quarter-wave transformer. Fabrication and measurement of designed chip-type quadrature hybrid show much smaller size than a conventional distributed quadrature hybrid and a good agreement with simulated results.

Keywords