E-1 良好な温度特性を持つ小形WCDMAフルバンド対応SAWデュプレクサ(弾性表面波デバイス)

門田 道雄; 中尾 武志; 西山 健次; 木戸 俊介; 加藤 雅則; 表 良一; 米倉 博; 高田 忠彦; 北 良一

doi:10.24492/use.27.0_39

E-1 Small SAW Duplexer for W-CDMA Full-Band having Good Temperature Characteristic

Michio Kadota, Takeshi Nakao, Kenji Nishiyama, Syunsuke Kido, Masanori Kato, Ryoichi Omote, Hiroshi Yonekura, Norihiko Takada, Ryoichi Kita

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JOURNAL FREE ACCESS

2006 Volume 27 Pages 39-40

DOI https://doi.org/10.24492/use.27.0_39

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Abstract

Small sized surface acoustic wave (SAW) duplexer for wide band CDMA with good temperature coefficient of frequency (TCF) has been required. But the size of conventional SAW duplexer is 3.8×3.8mm^2 size and that TCF is not good (-80ppm/℃). By using flattened SiO_2/Cu-electrode/YX-LiNbO_3, SAW duplexer having a low insertion loss and a good TCP has been realized.

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