Patent ID: 7116187

Claim:
An SAW device in which an SAW element is mounted, said SAW element including a ladder-type circuit which has a serial arm formed between input and output terminals and which has a plurality of parallel arms formed between said serial arm and a reference potential terminal, said SAW device comprising: a plurality of first SAW resonators which are located in said serial arm and each of which has a predetermined resonant frequency; second SAW resonators which are located in said plurality of parallel arms, respectively, and each of which has an anti-resonant frequency corresponding with said predetermined resonant frequency of said each first SAW resonator; and capacitance means which has a predetermined electrostatic capacity and which is interconnected between an output node of a resonator located in a parallel arm positioned in a nearest position of said input terminal and an output node of a resonator located in a parallel arm positioned in a nearest position of said output terminal.