宽带低损耗声表面波滤波器  

Low Loss Wideband SAW Filter

作　　者：曹亮[1] 黄广伦[1] 秦廷辉[1] 杨勋[1] 朱勇[1] 肖燕[1] 

机构地区：[1]四川压电与声光技术研究所,重庆400060

出　　处：《压电与声光》2000年第4期209-213,共5页Piezoelectrics & Acoustooptics

摘　　要：介绍了利用在３６°Ｙ－ＸＬｉＴａＯ３、６４°Ｙ－Ｘ　ＬｉＮｂＯ３、４１°Ｙ－Ｘ　ＬｉＮｂＯ３基片漏声表面波设计制作的宽带低损耗滤波器，给出了用耦合模理论模拟的曲线和实验结果，其相对带宽为２ ．８％～６． ５％，插损为１．７～２．４ ｄＢ，带外抑制大于４５ ｄＢ。Designs of low loss Wideband filters using leaky SAW on 36°Y-X LiTaO3,64°Y-X LiNbO3 and 41° Y-X LiNbO3 are introduced in this paper. Simulated curves by COM theory are presented. The experimental results are also given as relative bandwidth of 2. 8 % - 6.5 %,insertion loss of 1.7-2.4 dB,outband rejection>45 dB.

关 键 词：声表面波滤波器 宽带 低损耗 耦合谐振滤波器 

分 类 号：TN65[电子电信—电路与系统] TN715