| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-reliability branching filter, realizing miniaturization, comprising a transmitting SAW filter and a receiving SAW filter. SOLUTION: The branching filter includes a single piezoelectric substrate 110, a transmitting SAW filter 108 being formed on the single piezoelectric substrate 110 and comprising an output connecting terminal, and a receiving SAW filter 109 being formed on the single piezoelectric substrate 110 and comprising an input connecting terminal, wherein the output connecting terminal of the transmitting SAW filter 108 and the input connecting terminal of the receiving SAW filter 109 are provided individually. COPYRIGHT: (C)2008,JPO&INPIT
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