| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless circuit that can be commonly used in a plurality of frequency bands even in the case that a duplexer is configured by a current frequency variable filter.SOLUTION: A wireless circuit comprises a transmission/reception common antenna 911, a frequency variable duplexer 131, a 2-circuit 6-contact point switch 923, an RFIC 180 and a controller 190 executing changeover control depending on a control signal. The RFIC 180 determines a frequency band pair for transmission and reception signals inputted to the frequency variable duplexer 131, and generates and transmits a control signal for switch changeover control for making a transmission port corresponding to a determined transmission frequency band conduct with a transmission terminal, and making a reception port corresponding to a determined reception frequency band conduct with a reception terminal, and for frequency changeover control of the frequency variable duplexer 131. |
