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http://dx.doi.org/10.4191/KCERS.2003.40.11.1090

Design and Fabrication of Multilayer Diplexer for Dual Band GSM/DCS Applications using Lumped Elements  

심성훈 (한국과학기술연구원 박막재료연구센터)
강종윤 (한국과학기술연구원 박막재료연구센터)
최지원 (한국과학기술연구원 박막재료연구센터)
윤영중 (연세대학교 전기전자공학과)
김현재 (한국과학기술연구원 박막재료연구센터)
윤석진 (한국과학기술연구원 박막재료연구센터)
Publication Information
Abstract
In this paper, the modeling and design of high-Q multilayer passives and multilayer diplexer for GSM/DCS applications designed and fabricated using these passives have been investigated.. To miniaturize the system, configurations of inductor and capacitor have involved a square spiral structure and a vertically-interdigitated capacitor similar to 3D interdigital structure, respectively. Multilayer diplexers for GSM/DCS applications were designed and fabricated to apply high-Q multilayer passives to practical systems, which were designed by the proposed structural and equivalent circuit model. 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.
Keywords
Multilayer; LTCC; Diplexer; Inductor; Capacitor;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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