Patent ID: 6242991
Filing Date: 2001-06-05
Classification: H03H

Abstract:
A surface acoustic wave filter comprising:a plurality of parallel arms including a first resonator having a first resonance characteristic and a series arm including a second resonator having a second resonance characteristic having a resonance frequency which is substantially equal to an anti-resonance frequency of said first resonators,wherein an input resonator of one of said first resonators of said parallel arm is connected to an input of said surface acoustic wave filter, at least said input resonator including a plurality of comb teeth electrodes each of which has opposing first and second ends, at least a continuous connection electrode directly connecting the first end of each of said plurality of comb teeth electrodes while the second end of each of said plurality of comb teeth electrodes remains electrically open such that each of said plurality of comb teeth electrodes is arranged perpendicular to said continuous connection electrode, and bonding wires connected to said continuous connection electrode at both sides of a center line of said plurality of comb teeth electrodes.