広帯域ラダー型SAWフィルタの動的温度補償の検討

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2011/06/01

タイトル(英語): Considerations for Dynamic Temperature Compensation of Wideband Ladder-type SAW Filter

著者名: 中村　暢之（千葉大学 大学院工学研究科），小松　禎也（千葉大学 大学院工学研究科），大森　達也（千葉大学 大学院工学研究科），橋本　研也（千葉大学 大学院工学研究科），山口　正恆（千葉大学 大学院工学研究科）

著者名(英語): Nobuyuki Nakamura (Graduate school of Engineering Chiba university), Tomoya Komatsu (Graduate school of Engineering Chiba university), Tatsuya Omori (Graduate school of Engineering Chiba university), Ken-ya Hashimoto (Graduate school of Engineering Chiba university), Masatsune Yamaguchi (Graduate school of Engineering Chiba university)

キーワード: ラブ波型SAW，ラダー型SAWフィルタ，可変フィルタ，動的温度補償　　Love type SAW，Ladder-type SAW filter，frequency tunable filter，Dynamic Temperature Compensation

要約(英語): Because of there excellent features such as small-size, wide bandwidth, and low insertion loss, the ladder-type filters based on surface acoustic wave (SAW) technology have been widely used as radio-frequency (RF) filters in mobile communications. We can make wide bandwidth, and low insertion loss, the ladder-type SAW filters on a Cu-grating/15°LiNbO3 substrate structure. On the other hand, it is said that wide bandwidth filters is bad temperature characteristic. So this paper discusses dynamic temperature compensation of wideband ladder-type SAW filters. First, we investigate how wide tunability is achievable using variable capacitors parallel- and/or series-connectted to SAW resonators in the filter configuration. Second, we measured the temperature characteristic of resonator. Finally, we simulated temperature compensation of wideband ladder-type SAW filters. As a result, we were able to compensate the change of the characteristic with the ladder-type SAW filter connected variable capacitors.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.131 No.6 （2011） 特集：圧電材料・デバイス

本誌掲載ページ: 1181-1185 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/131/6/131_6_1181/_article/-char/ja/