A Phase Canceling Technique to Improve SAW Duplexer Isolation

doi:10.3390/mi14020239

	A Phase Canceling Technique to Improve SAW Duplexer Isolation
	Tao, Jianbin 1; Tang, Zhengjie 2; Zou, Yali 1,2; Wang, Bin 2; Li, Jiawei3 ; Liu, Yuhao 1; Wu, Tao3
	2023-02
发表期刊	MICROMACHINES
EISSN	2072-666X
卷号	14 期号:2
发表状态	已发表
DOI	10.3390/mi14020239
摘要	Spectrum resources are becoming increasingly crowded, and the isolation interval between different systems is getting smaller and smaller. This puts forward higher requirements for the duplexer. The duplexer is an important part of the radio frequency front end, and the isolation requirement is becoming higher. This paper presents a phase canceling circuit to improve the performance of the duplexer to meet the requirement of the communication system for isolation. A phase canceling circuit is an effective method to enhance the isolation through use of a surface acoustic wave (SAW) on-chip circuit. It contains a duplexer and a branch. The branch is designed for diminishing the leakage signal of the duplexer. Compared with the leakage signal, the branch consists of two attenuators and a phase shifter to generate a signal which has equal extent and reverse phase. As a result, this method is capable of increasing the isolation of band 5 by 12 dB in the downlink frequency. Meanwhile, it neither affects other factors, such as insertion loss or return loss, nor increases the size of the chip. The phase canceling circuit is expected to promote the quality of duplexer to satisfy the strict requirements in 4G and 5G systems. © 2023 by the authors.
关键词	5G mobile communication systems Acoustic surface wave devices Communications systems Duplexers Isolation Leakage signals On-chip circuits Performance Phase-shifters Radio frequency front end Spectra's Surface acoustic waves
URL	查看原文
收录类别	EI ; SCOPUS ; SCI
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Instruments & Instrumentation ; Physics
WOS类目	Chemistry, Analytical ; Nanoscience & Nanotechnology ; Instruments & Instrumentation ; Physics, Applied
WOS记录号	WOS:000940595700001
出版者	MDPI
EI入藏号	20230913657256
EI主题词	Acoustic waves
EI分类号	716.3 Radio Systems and Equipment ; 751.1 Acoustic Waves ; 752.1 Acoustic Devices
原始文献类型	Journal article (JA)
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/284267
专题	信息科学与技术学院_硕士生信息科学与技术学院_PI研究组_吴涛组
通讯作者	Wu, Tao
作者单位	1.Shanghai Univ, Sch Microelect, Shanghai 200444, Peoples R China 2.Changzhou Bowo Microelect Co Ltd, Changzhou 213000, Peoples R China 3.ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 201210, Peoples R China
通讯作者单位	信息科学与技术学院
推荐引用方式 GB/T 7714	Tao, Jianbin,Tang, Zhengjie,Zou, Yali,et al. A Phase Canceling Technique to Improve SAW Duplexer Isolation[J]. MICROMACHINES,2023,14(2).
APA	Tao, Jianbin.,Tang, Zhengjie.,Zou, Yali.,Wang, Bin.,Li, Jiawei.,...&Wu, Tao.(2023).A Phase Canceling Technique to Improve SAW Duplexer Isolation.MICROMACHINES,14(2).
MLA	Tao, Jianbin,et al."A Phase Canceling Technique to Improve SAW Duplexer Isolation".MICROMACHINES 14.2(2023).