摘要
WereporttherealizationofbroadbandreflectedacousticfocusinglensesbasedonthermoacousticphasedarraysofBessel-likebeams,inwhichtheunitsofphasemanipulationarecomposedofthreerigidinsulatedboundariesandathermalinsulationfilminairwithdifferenttemperatures.Basedontheseunits,werealizeareflectedfocusinglenswhichcanfocusreflectedacousticenergyonaline,anditsfractionalbandwidthcanreachabout0.29.Inaddition,wediscusstheinfluencesofthebaseangleofBessel-likebeam,thenumberofbasicunit,andthevariationofunittemperatureonfocusingperformancesindetails.Furthermore,thereflectedfocusinglensforthecylindricalacousticwavebasedontheBessel-likebeamisalsodemonstrated.Theproposedfocusinglenshastheadvantagesofabroadworkingbandwidth,largefocussize,andhighrobustness,whichmayprovidepossibilitiesforthedesignandapplicationofacousticlenses.
出版日期
2018年12月22日（中国期刊网平台首次上网日期，不代表论文的发表时间）
