小型化高阻带抑制声表面波滤波器组件设计  

Design of Miniaturized Surface Acoustic Wave Filter Component with High Stop-Band Suppression

作　　者：张伟 蒲志勇 龚旭 温桎茹 杨桃均[1] 吕翼[1] ZHANG Wei;PU Zhiyong;GONG Xu;WEN Zhiru;YANG Taojun;LYU Yi(The 26th Institute of China Electronics Technology Group Corporation,Chongqing 400060,China)

机构地区：[1]中国电子科技集团公司第二十六研究所

出　　处：《压电与声光》2023年第5期677-681,共5页Piezoelectrics & Acoustooptics

摘　　要：基于声表面波(SAW)滤波器技术,采用两级滤波器级联、滤波器环绕开关、多通道抗干扰布局等方法,实现了一种小型化、高阻带抑制组件的研制。实验结果表明,研制的多通道滤波组件尺寸为18 mm×15 mm×5 mm,其-3 dB带宽大于48 MHz,插入损耗小于7 dB,带内幅度波动小于1.5 dB,近端阻带抑制大于70 dBc,具有很好的实用性。Based on surface acoustic wave(SAW) filter technology,a miniaturized component with high stop-band suppression has been developed using methods such as two-stage filter cascade,filter surround switch,and multi-channel anti-interference layout.The experimental results indicate that the developed multi-channel filtering component has a size of 18 mm×15 mm×5 mm,with-3 dB bandwidth of greater than 48 MHz,insertion loss of less than 7 dB,in-band amplitude fluctuation of less than 1.5 dB,and near-end stop-band suppression of greater than 70 dBc.It has good practicality.

关 键 词：声表面波滤波器 级联 小型化 阻带抑制 

分 类 号：TN384[电子电信—物理电子学] TN713