| 摘要 |
<p>Provided is a duplexer module wherein transmitting signals are correctly monitored without deteriorating receiving sensitivity. A duplexer module (1) is provided with a transmission line (5), a reception line (4) and an antenna-sharing line (3), and performs conversion between the transmitting/receiving signals and the antenna-sharing signals. A transmission filter (Tx) is inserted into the transmission line (5), and the transmission filter (Tx) passes through the transmitting signals and stops the receiving signals. A reception filter (Rx) is inserted into the reception line (4), and the reception filter (Rx) passes through the receiving signals and stops the transmitting signals. A first line (CPL1) of a coupler (CPL) which detects the transmitting signals is inserted into the transmission line (5) at a stage subsequent to the transmission filter (Tx).</p> |
