| 摘要 |
<p>Provided is a duplexer module wherein deterioration of isolation between signal lines is suppressed, even when the duplexer module has reduced sizes, and communication performance is improved. A duplexer module (1) has a transmission line (5), a reception line (4) and an antenna line (3) connected therein, and is provided with a transmission filter (Tx), a reception filter (Rx) and a multilayer substrate (2). The transmission filter (Tx) is inserted into the transmission line (5) and passes through transmitting signals. The reception filter (Rx) is inserted into the reception line (4) and passes through receiving signals. In the multilayer substrate (2), a surface electrode (21) having the transmission filter (Tx) mounted thereon is formed on the top surface, and a surface electrode (21) having the reception filter (Rx) mounted thereon is formed on the bottom surface of a recessed section (23).</p> |
