| 摘要 |
PROBLEM TO BE SOLVED: To provide a duplexer module that suppresses deterioration in isolation between signal lines and improve communication performance even when the duplexer module is made compact. SOLUTION: The duplexer module 1 includes a transmission filter Tx, a reception filter Rx, and a multilayer substrate 2. The multilayer substrate 2 includes a filter mounting terminal 8 for mounting the transmission filter Tx and a reception filter mounting terminal 7 for mounting the reception filter Rx. The filter mounting terminal 8 includes a surface electrode TXin for signal input to the transmission filter Tx and a surface electrode TXout for signal output from the transmission filter Tx. The filter mounting terminal 7 includes a surface electrode RXin for signal input to the reception filter Tx and a surface electrode RXout for signal output from the reception filter Rx. The filter mounting terminal 7 and filter mounting terminal 8 are characterized in that main directions wherein the surface electrodes for signal input and surface electrodes for signal output are arrayed are different. COPYRIGHT: (C)2010,JPO&INPIT
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