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高阻带抑制宽带低损耗声表面波滤波器研究

Shiping MAO,Qinggao ZENG,Yanguang CHEN,Shiyi JIANG,Yuhao PENG

Piezoelectrics & Acoustooptics（2018）

Cited 0|Views13
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Abstract
基于分布间隙纵向耦合五换能器结构,加入谐振器单元,采用41°Y-X LiNbO3基片材料,通过优化设计,研制出中心频率232 MHz,3 dB带宽23.2 MHz的声表面波滤波器.该产品的插入损耗为－1.9 dB,相对带宽达到10%,矩形系数2.2,阻带抑制大于50 dB,产品综合性能指标优异,有很好的实用性.
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