SAW滤波器具有非常高的形状因子

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI:10.1109/ULTSYM.1997.662981

V. B. Chvets, P. G. Ivanov, V. M. Makarov, V. S. Orlov

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引用次数: 1

摘要

高形状因子的横向滤波器是基于多谐波和带隔离截面的提取加权换能器研制的。所开发的仿真技术对直列滤波器结构和带多带耦合器的滤波器结构都提供了良好的仿真结果。给出了在YZ-LiNbO/sub - 3/和st -石英衬底上制作的中频滤波器的实验结果。直列滤波器的SF值为1.15-1.2,MSC滤波器的SF值为1.05-1.1。所有滤波器的阻带抑制都大于50db。

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SAW filters with very high shape factor

Transversal filters with very high shape factor have been developed based on multiharmonic and withdrawal weighted transducers with isolated sections. The developed simulation technique provides excellent results both for in-line filter structures and those with multistrip couplers. The experimental results are presented for IF filters manufactured on YZ-LiNbO/sub 3/ and ST-quartz substrates. In-line filters exhibit SF in the range 1.15-1.2 and for MSC filters, SF values 1.05-1.1 have been obtained. For all filters the stopband rejection is more than 50 dB.

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来源期刊

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)

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