ACOUSTIC WAVE RESONATOR AND VERTICALLY COUPLED DOUBLE MODE FILTER USING THE SAME, AS WELL AS LADDER FILTER

摘要

PPROBLEM TO BE SOLVED: To provide an acoustic wave resonator for use in a mobile phone, a wireless LAN terminal or the like, in which spurious due to a horizontal mode can be suppressed. PSOLUTION: The acoustic wave resonator 8 includes a piezoelectric substrate 9, a bus bar 10, a bus bar 11 parallel to the bus bar 10, a plurality of electrode digits 12 each having one end connected non-orthogonally to the bus bar 10 and extending toward the bus bar 11, and a plurality of electrode digits 13 each having one end connected non-orthogonally to the bus bar 11 and extending toward the bus bar 10 to intersect with the respective electrode digits 12. PCOPYRIGHT: (C)2011,JPO&INPIT