一种小型化高性能薄膜体声波双工器设计方法  

Design Method for a Miniaturized High-Performance FBAR Duplexer

作　　者：张智欣 陈长娥 韩茜茜 史向龙 魏家贵 苏波 范佰杰 林树超 ZHANG Zhixin;CHEN Chang’e;HAN Xixi;SHI Xianglong;WEI Jiagui;SU Bo;FAN Baijie;LIN Shuchao(Beijing Aerospace Micro-Electronics Technology Co.,LTD,Beijing 100854,China)

机构地区：[1]北京航天微电科技有限公司,北京100854

出　　处：《压电与声光》2024年第5期655-659,共5页Piezoelectrics & Acoustooptics

摘　　要：针对射频前端对双工器小型化的使用需求,采用拓扑结构设计、匹配设计、版图设计和封装设计等设计方法,研制出一款小型化高性能薄膜体声波(FBAR)双工器,其接收端频率为1805~1880 MHz,发射端频率为1710~1785 MHz,通带内整体插入损耗≤3.0 dB,通道频段的相互抑制≥50 dB,隔离度≥50 dB,尺寸为2.0 mm×1.6 mm×0.9 mm。该双工器具有小体积、低插损、高阻带、高隔离等特性,符合应用系统对双工器的使用需求。To meet the miniaturization requirements of duplexers in RF front-end applications,this paper employs a comprehensive approach,incorporating techniques such as topology design,matching network design,chip layout design,and package design.Consequently,a miniaturized high-performance film bulk acoustic wave resonator(FBAR)duplexer was developed.The duplexer operates in the receive band frequency range of 1805-1880 MHz and the transmit band frequency range of 1710-1785 MHz.The insertion loss in both the RX and TX bands is less than 3.0 dB,with RX rejection in the TX band and TX rejection in the RX band exceeding 50 dB.Additionally,the isolation is greater than 50 dB.The product dimensions are 2.0 mm×1.6 mm×0.9 mm.The duplexer demonstrates characteristics of miniaturization,low insertion loss,high rejection,and high isolation,meeting system performance requirements.

关 键 词：高性能薄膜体声波(FBAR) 双工器 小型化 高隔离 低插损 

分 类 号：TN384[电子电信—物理电子学] TN64