| 摘要 |
PROBLEM TO BE SOLVED: To fully increase the amount of attenuation caused by a change in a formed attenuation pole not only in a high-band attenuation band, but also in a low-band one regardless of a miniaturized configuration. SOLUTION: An SAW filter package comprises a piezoelectric substrate on which a first SAW resonator connected between first and second nodes, a second SAW resonator connected between the first and third nodes, and a third SAW resonator connected between the second and fourth nodes are formed; a package having a plurality of electrodes and mounting the piezoelectric substrate; a first wire connected between the third and fourth nodes; and a second wire connected between the electrode to which a ground voltage is supplied in the electrodes, and the third node. COPYRIGHT: (C)2006,JPO&NCIPI
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