Concent: Historical Review &t 1885 Discovery by British Physicist Releigh In Research on seismic Wave 1949 Bell Lab Discovery LiNbO3 1965 Exciting SAW artificially by American Scientist R. M.White and Voltmer Using Interdigital Transducer(IDT) Since1970’s 29X( Wide Applications in Telecommunication, Radiobroadcast. TVet R71 Since 1980s SAW Sensor DevelopmentConcept: Historical Review 1885 Discovery by British Physicist Releigh In Research on seismic Wave 1949 Bell Lab Discovery LiNbO3 1965 Exciting SAW artificially by American Scientist R.M.White and Voltmer Using Interdigital Transducer(IDT) Since 1970’s Wide Applications in Telecommunication, Radiobroadcast, TV etc. Since 1980’s SAW Sensor Development