Patent ID: 7038560

Claim:
A SAW filter comprising: a piezoelectric substrate; input/output electrodes disposed on the piezoelectric substrate and comprising interdigital electrodes each having a plurality of electrode fingers; and two reflectors disposed on the piezoelectric substrate in an arrangement sandwiching the input/output electrodes between the reflectors with each reflector having a plurality of electrode fingers; wherein each electrode finger of the input/output electrodes is partially bent at an angle and has at least two linear sections spaced a distance L 1 from one another in the propagating direction of the SAWs, and with each electrode finger of the reflector being partially bent at an angle and having at least two linear sections spaced a distance L 2 from one another in the propagating direction of the SAWs, wherein the distance L 1 and the distance L 2 satisfy the relationship: 3λ/8≦L 1 ≦5λ/8 and 3λ/8≦L 2 ≦5λ/8, respectively, where λ represents the wavelength of the SAWs.