基板内Cu溝電極を用いた広帯域SAW共振子とそのチューナブルフィルタへの応用

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): Ultra Wide Band SAW Resonator Composed of Grooved Cu Electrodes and its Application to Tunable Filters

著者名: 門田　道雄（（株）村田製作所），木村　哲也（（株）村田製作所），伊田　康之（（株）村田製作所）

著者名(英語): Michio Kadota (MURATA MANUFACTURING CO., LTD.), Tetsuya Kimura (MURATA MANUFACTURING CO., LTD.), Yasuyuki Ida (MURATA MANUFACTURING CO., LTD.)

キーワード: Cu溝電極，LiNbO3，超広帯域共振子，チューナブルフィルタ　　Grooved Cu-electrode，LiNbO3，ultra wide band resonator，tunable filter

要約(英語): A cognitive radio system, which is researched to use a limited frequency resource effectively, requires a tunable filter with a wide variable frequency range. A resonator with wide band is required to realize the tunable filter. It was reported that a resonator composed of a Cu-electrode/15°YX-LiNbO3 had wide bandwidth of 12%. This time, authors attempted to fabricate an one-port resonator composed of a grooved Cu-electrode/4°YX-LiNbO3. As the result, it had a wider bandwidth of 17% of 1.3 times than that on Cu electrode/4°YX-LiNbO3. This resonator was applied to a tunable filter, and as the results, the tunable filter having tunable range of 6.8% in center frequency was experimentally realized using a band pass filter type circuit, and those having tunable range of 9 to 12% theoretically using a ladder type circuit.

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: 1108-1114 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_1108/_article/-char/ja/