Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)
- 2003.11a
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- Pages.294-298
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- 2003
Design and fabrication of Diplexer for Dual-band GSM/DCS Application using High-Q Multilayer Inductors
고품질 적층형 인덕터를 이용한 이중 대역 GSM/DCS 대역 분리용 다이플렉서의 설계 및 제작
- Sim, Sung-Hun (KIST) ;
- Kang, Chong-Yun (KIST) ;
- Choi, Ji-Won (KIST) ;
- Yoon, Young-Joong (Yonsei University) ;
- Yoon, Seok-Jin (KIST) ;
- Kim, Hyun-Jai (KIST)
- 심성훈 (한국과학기술연구원) ;
- 강종윤 (한국과학기술연구원) ;
- 최지원 (한국과학기술연구원) ;
- 윤영중 (연세대학교) ;
- 윤석진 (한국과학기술연구원) ;
- 김현재 (한국과학기술연구원)
- Published : 2003.11.15
Abstract
In this paper, the modeling and design of high-Q multilayer passives have been investigated, and multilayer diplexer for GSM/DCS applications has been designed and fabricated using the passives. To minimize the system, the configuration of a multilayer inductor has involved a square spiral structure. Modeling of a multilayer inductor was performed by the subsystems of distributed components, and using the modeling the optimal structures of the high-Q multilayer inductor could be designed by analyzing parasitics and couplings which affect their frequency characteristics. Multilayer diplexer for GSM/DCS application has been designed and fabricated using LTCC technology. LPF for GSM band had the passband insertion loss of less than 0.55 dB, the return loss of more than 12 dB, and the isolation level of more than 26 dB by locating attenuation pole at 1800 MHz. HPF for DCS band had the passband insertion loss of less than 0.82 dB, the return loss of more than 11 dB, and the isolation level of more than 38 dB by locating attenuation pole at 930 MHz.