| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a branching filter with a low profile that is downsized and has an excellent characteristic. <P>SOLUTION: A transmitter side filter 4 and a receiver side filter 6 whose center frequencies differ from each other are mounted in a package wherein a plurality of boards 7 are layered. At least one of the boards is provided with a matching element 2 for matching the phase between the transmitter side filter 4 and the receiver side filter 6 and a wiring connected to at least one of external terminals of the transmitter side filter 4 and the receiver side filter 6, and an electrode connected to the ground is provided between the matching element 2 and the wiring. <P>COPYRIGHT: (C)2004,JPO</p> |
