Ridge-shaped periodically poled transducer for wide band R-F filter

被引：0
|
作者：
Henrot, Fabien [1 ]
Bassignot, Florent [1 ]
Rauch, Jean-Yves [1 ]
Ulliac, Gwenn [1 ]
Ballandras, Sylvain [2 ]
机构：
[1] FEMTO ST Inst, 32 Ave Observ, F-25000 Besancon, France
[2] FreCNSys, F-25000 Besancon, France
来源：
2014 EUROPEAN FREQUENCY AND TIME FORUM (EFTF) | 2014年
关键词：
periodically poled transducer; lithium niobate; ridge waveguide; filter;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Transducer on Periodically Poled Lithium Niobate (PPLN) exhibiting an electromechanical coupling about 20% and an equivalent phase velocity about 10 km. s(-1) were shown in [1]. These transducers are 3D structured to overcome Surface Acoustic Wave (SAW) and Bulk Acoustic Wave (BAW) technological limits, such as short circuit between electrodes for SAW and precise thickness control for BAW. The present work shows the use of these 3D structured transducers for Radio Frequency (RF) filtering. An acoustic filter showing a band pass of about 5MHz has been realized on Lithium Niobate at 250MHz. This filter is made of PPLN exhibiting a poling period of 14.9 mu m.
引用
收藏
页码：290 / 293
页数：4
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