| 摘要 |
A transmission/reception device (10) comprising a control unit (11), an antenna duplexer (12), a transmission circuit (131), a reception circuit (132), a detection unit (16), an antenna matching circuit (17), and a load adjustment circuit (20). The detection unit (16) is connected to the antenna side of the antenna duplexer (12). The detection unit (16) detects reflected signals generated when the transmission signals are reflected by the antenna. The control unit (11) adjusts the element values for a capacitor and a resistance that constitute the load adjustment circuit (20), on the basis of the detected reflected signals. The load adjustment circuit (20) is connected to the antenna duplexer (12) and, by adjusting the element values for the load adjustment circuit (20), adjusts the impedance of the antenna duplexer (12) and matches impedance between the antenna and the antenna duplexer (12). |
