Patent ID: 7986200
Filing Date: 2011-07-26
Classification: H03H

Abstract:
1. An acoustic wave filter comprising: a first acoustic wave filter having a first group of multimode filters connected, a first unbalanced input node and two first balanced output nodes, one or more first multimode filters among the first group of multimode filters being connected to the two first balanced output nodes; and a second acoustic wave filter having a second group of multimode filters, a second unbalanced input node and two second balanced output nodes, one or more second multimode filters among the second group of multimode filters having an aperture length different from that of the first multimode filter and a connection with the two second balanced output nodes, the first and second multimode filters having different pass bands, one of the two first balanced output nodes and one of the two second balanced output nodes being unified, and the other first balanced output node and the other second balanced output node being unified, wherein the aperture length of the first multimode filter differs from the aperture length of the second multimode filter so that a signal having a frequency included within a pass band of the first acoustic wave filter does not pass through the second acoustic wave filter and a signal having a frequency included within a pass band of the second acoustic wave filter does not pass through the first acoustic wave filter.