[1] [1] BALYSHEVA O L.SAW filters and mobile communication systems 5G［C］//Russia:2021 Wave Electronics and its Application in Information and Telecommunication Systems(WECONF)St.Petersburg,2021:1-5.

[3] [3] TAKAI T.Incredible high performance SAW resonator on novel multi-layerd substrate［C］//Chicago:2016 IEEE International Ultrasonics Symposium(IUS),2016:1-4.

[4] [4] PLESSKY V.FEM modeling of an entire 5-IDT CRF/DMS filter［C］//Washington:2017 IEEE International Ultrasonics Symposium (IUS),2017:1-5.

[5] [5] GOTO R,FUJIWARA J,NAKAMURA H,et al.Multimode coupling of modes model for spurious responses on SiO2/LiNbO3 substrate［J］.Jpn J Appl Phys,2018,57(7S1):07LD20.

[6] [6] ABBOTT B.Temperature compensated SAW with high quality factor［C］//Chicago:2017 IEEE International Ultrasonics Symposium (IUS),2017:1.

[7] [7] HASHIMOTO K Y.Surface acoustic wave devices in Telecommunications［M］.Berlin Heidelber:Springer Verlag,2000.

[8] [8] WANG Weibao,WU Haodong.High selectivity SAW DMS filter with in-between shorted-gratings［C］//San Diego,CA,USA:2010 IEEE International Ultrasonics Symposium,2010:1263-1266.