Temperature compensation surface acoustic wave filter, preparation method thereof and application thereof

The invention discloses a temperature compensation surface acoustic wave filter, a preparation method and an application thereof. The temperature compensation surface acoustic wave filter comprises aninterdigital transducer electrode, wherein the interdigital transducer electrode comprises a first bus electrode and a second bus electrode; the first bus electrode comprises a plurality of first interdigital strip electrodes which are arranged at intervals, and the second bus electrode comprises a plurality of second interdigital strip electrodes which are arranged at intervals; in the directionparallel to the first bus electrode or the second bus electrode, a section of region from the tail end of the end part of the first interdigital strip electrode to the end of the first bus electrodeforms a first boundary region; a section of region from the tail end of the end part of the second interdigital strip electrode to the end of the second bus electrode forms a second boundary region; and an insulating dielectric