First practical model of very small and low insertion loss laminated duplexer using LTCC suitable for W-CDMA portable telephones

被引：0

作者：

Ishizaki, Toshio ^{[1
]}

Miyake, Hideyuki ^{[1
]}

Yamada, Toru ^{[1
]}

Kagata, Hiroshi ^{[1
]}

Kushitani, Hiroshi ^{[1
]}

Ogawa, Koichi ^{[1
]}

机构：

[1] Matsushita Electric Industrial Co, Ltd

来源：

IEEE MTT-S International Microwave Symposium Digest | 2000年 / 1卷

关键词：

Broadband networks - Cellular telephone systems - Ceramic materials - Code division multiple access - Computer simulation - Insertion losses - Laminating - Notch filters - Resonators;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A laminated duplexer using Low Temperature Co-fired Ceramics (LTCC) has been developed for the first time practically. The technologies of reducing the insertion loss are explained. They include the new ceramic-lamination process and the filter circuit design. The inner electrodes for the resonators are thicken by the state-of-art ceramic lamination process. The design of laminated band elimination filter is also studied. As the results, its size is reduced by 30% comparing to a conventional mono block duplexer, while the performances are almost the same. It is very suitable for the next generation W-CDMA portable telephones.

引用

页码：187 / 190