高隔离SAW双工器模组的研制
Development of High-Isolation SAW Diplexer Module
蒲志勇 1杨桃均 1罗文汀 1张伟 1龚旭 1杨卫东 1温桎茹1
作者信息
- 1. 中国电子科技集团公司 第二十六研究所,重庆 401332
- 折叠
摘要
为进一步提高LTE B3双工器频段间隔离度,利用系统级封装(SIP)技术设计了一种高隔离声表面波(SAW)双工器模组.该模组由2个SAW双工器和3个耦合器组成,利用TX-RX路径的相位相消及耦合器的隔离度,实现单颗SAW双工器上下行链路间隔离度的提高.采用阻抗元滤波器架构,实现了单颗SAW双工器隔离度达51 dB.采用宽边带状线多层螺旋耦合线结构实现了工作宽带宽、集成小型化的3 dB耦合器.研制的模组测试结果表明,在B3频段内,尺寸为8.0 mm×8.0 mm×2.0 mm,插入损耗小于3.2 dB,回波损耗大于13 dB,隔离度优于65 dB,承受瞬间功率可达34 dBm.
Abstract
To further improve LTE B3 diplexer interband isolation,a high-isolation SAW duplexer module is de-signed using SIP technology in this study.The module is composed of two SAW duplexers and three couplers.It applies the phase cancellation of the TX-RX path and the isolation of the couplers to improve the isolation between the uplink and downlink of a single SAW duplexer.An impedance-element filter architecture is used to achieve an i-solation degree of 51 dB for the proposed module.A broadside stripline multilayer helical coupler-line architecture is adopted to achieve miniaturized integrated 3 dB couplers with a wide operating bandwidth.The results of the devel-oped module show that in the B3 band,for a SAW duplexer measuring 8.0 mm×8.0 mm×2.0 mm,the insertion loss is less than 3.2 dB,the return loss exceeds 13 dB,and the isolation degree exceeds 65 dB;furthermore,it can withstand instantaneous power levels up to 34 dBm.
关键词
高隔离/SAW双工器/耦合器/模组/频分双工/多层螺旋耦合线Key words
high isolation/SAW duplexer/coupler/module/frequency division duplexing(FDD)/multilayer helical coupling line引用本文复制引用
出版年
2024
NETL
NSTL
万方数据