Wideband SAW filters using cascaded unidirectional transducers

Takashi Shiba, Yuji Fujita, Seima Kondo, Junchi Hamasaki, Mayumi Ide, Seiichi Ogawa, Koji Oda

研究成果: ジャーナルへの寄稿会議記事査読

3 被引用数 (Scopus)


An improved cascaded UDT structure has been proposed to achieve wideband performances. In order to confirm the prediction, simulations and experiments are applied. We select the equivalent circuit model and circuit composition procedure as a simulation technique. The predictions are verified by the simulations and the experiments. It is no restriction for bandwidth of cascaded transfer function according to the simulation results. The structure is applied to a wideband RF filter which consists of IDTs for the purpose of monitoring. Two times wider bandwidth of the filter than the conventional one is obtained and the transfer functions for forward, backward and through transducer is found to be unidirectivity.

ジャーナルProceedings - IEEE Ultrasonics Symposium
出版ステータス出版済み - 2001
イベント2001 Ultrasonics Symposium - Atlanta, GA, 米国
継続期間: 2001 10月 62001 10月 10


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