A new configuration of surface acoustic wave intermediate-frequency filter with compact size and improved insertion loss

被引：0

作者：

Chung, Mei-Hui ^{[1
]}

Wang, Shuming T. ^{[1
]}

机构：

[1] Department of Electrical Engineering, I-Shou University, 1, Hsueh-Cheng Road, Ta-Hsu Hsiang, Kaohsiung, 840, Taiwan

来源：

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers | 1600年 / 45卷 / 2 A期

关键词：

Size reduction is always a major challenge to surface acoustic wave (SAW) manufacturers. For some years; commercial SAW filter designers have been developing various configurations of SAW filters just to fit into a smaller package. In this work; a new single-phase unidirectional transducer (SPUDT) based intermediate-frequency (IF) filter with improved insertion loss and compact size is proposed. This filter has an architecture that combines electrode-width controlled single-phase unidirectional transducer (EWC-SPUDT) and comb-type SPUDT. As a result of this improvement; a filter for IF-filtering of Digital European Cordless Telephone (DECT) system can be squeezed into a surface-mount device (SMD) 7.0 × 5.0mm2 package. The performance of this filter even excels most commercial available IF filters in the same application. © 2006 The Japan Society of Applied Physics;

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摘要：

Journal article (JA)

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页码：841 / 845