摘要
本文介绍一种用Y-41°LiNbO_3作基片的宽带声表面波低损耗滤波器,它采用U型多条耦合单向换能器(UMSCU-UDT)和镜象阻抗连结耦合换能器结构,其性能是3dB相对带宽达10%,插人损耗≤7dB,带外抑制≥50dB.
A broad-band and low loss SAW filter has been developed using Y-41°LiNbO3 (LN) sub-strat. The filter employed a U-shaped multistrip coupling unidirectional transducer (UMSC-UDT) and an image impedance connected Coupling transducer. lts performances are as follows: relative bandwidth at 3dB is 10%, insertion loss≤7dB, rejection area attenuation≥50dB.
出处
《压电与声光》
CSCD
北大核心
1993年第1期7-8,12,共3页
Piezoelectrics & Acoustooptics
