| 摘要 |
On a substrate (200), a resistor (24R) is arranged between the position of an amplifier circuit (11) and the position of a duplexer (24), so coupling is suppressed in the space between the amplifier circuit (11) and the path from a main switch (26) to a receiving terminal (P24) via the duplexer (24). This high-frequency module (100) suppresses the aforementioned coupling even when the RX terminal (242) of the duplexer (24) is facing the amplifier circuit (11), and therefore, harmonics of the transmission signal in a low region can be kept from leaking to the receiving terminal (P24) via the path formed by said coupling. In other words, in this high-frequency module (100), it is possible to ensure the degree of freedom of board layout while avoiding reduction in the isolation characteristics in the low region and a high region. |
