Study of high isolation and miniature saw duplexer

Takashi Shiba, Masashi Ooki, Junichi Hamasaki, Osamu Hikino, Yuji Fujita

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Finite element methods for integrated circuits of LTCC and equivalent circuit models for SAW chips are applied to SAW duplexer analysis. We improve this composite method with considering feed through. A good agreement with this improved composite simulation and experiment is obtained. We have found that magnetic interaction between a phase-shifter and a matching element for Tx circuit becomes a worse of Tx-Rx isolation. We have also found an improved shape of element to suppress the magnetic interaction between these circuits by try and error method. An isolation value of 48 dB in Rx band is observed at an improved duplexer. Consequently it is verified that a improved composite model is effective for analyzing Tx-Rx isolation of a miniature SAW duplexer. And high isolation characteristic for SAW duplexer is also obtained by using improved structure.

本文言語English
ホスト出版物のタイトル2006 IEEE International Ultrasonics Symposium, IUS
ページ1060-1064
ページ数5
DOI
出版ステータスPublished - 2006 12 1
外部発表はい

出版物シリーズ

名前Proceedings - IEEE Ultrasonics Symposium
1
ISSN(印刷版)1051-0117

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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