低频高阻带抑制SAW有源滤波组件  

An Active SAW Filter Module with Low Frequency and High Stopband Rejection

作　　者：张晓迎[1] 谭学斌[1] 张峥嵘[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》2002年第4期255-257,共3页Piezoelectrics & Acoustooptics

摘　　要：介绍了一种低频高阻带抑制 SAW有源滤波组件的设计方法 ,并介绍了最新研制的滤波组件的性能。其中心频率 18MHz,通带波动 0 .5 d B,近端阻带抑制达 10 5 d B,远端阻带抑制大于 95 d B(其中三次谐波抑制大于75 d B) ,增益 8d B。The design method of an active SAW filter module with low frequency and high stopband rejection is introduced in this paper.The performances of the module developed recently are also given.Its center frequency is 18 MHz with the passband ripple of 0 5 dB.The near end stopband rejection is up to 105 dB while the far end larger than 95 dB(triple frequency harmonic suppression is larger than 75 dB).The module gain is 8 dB.

关 键 词：低频带通滤波器 体液效应 声表面波滤波 低频声表面波 

分 类 号：TN713.4[电子电信—电路与系统]