| 摘要 |
PROBLEM TO BE SOLVED: To attain miniaturization while keeping a required filter characteristics by comprising a group of connecting terminals for connecting two sets of branching filters and external circuits, and separating an area where a group of antenna terminals, a group of transmission terminals and a group of receiving terminals are arranged in terms of a flat surface. SOLUTION: An antenna branching filter consists of two branching filters formed in one package. Each branching filters consists of a transmission filter, a receiving filter and one matching circuit. The two branching filters are formed of a group of antenna terminals ANT1, ANT2 common with a transmission filter to be connected with an antenna, a group of transmission terminals Tx1, Tx2, a group of receiving terminals Rx1, Rx2 and a ground terminal GND to connect with an external circuit. The connecting terminals included in each group of he terminals are closely arranged and the areas in which each group of connecting terminals are separated from each other are arranged so as not to cross with each other even in the periphery of a package. |
