| 摘要 |
A branching filter has a group of terminals including an antenna terminal, a transmission signal terminal, reception signal terminals and, and a ground terminal; a transmitting filter located between the antenna terminal and the transmission signal terminal; a second filter located between the antenna terminal and the reception signal terminals and; a first connection line connecting the parallel resonators and the ground terminal; a second connection line connecting the receiving filter and the ground terminal; and a third connection line which connects the first connection line and the second connection line and which is electromagnetically coupled with at least one of the resonators and lines configuring the transmitting filter. |
