| 主权项 |
1. A communication circuit, comprising:
a transmission section that generates a transmission signal to be transmitted to an outside, via an antenna; a reception section that processes a received signal received from the outside, via the antenna; a first filter that filters the transmission signal supplied from the transmission section; a second filter that is a variable filter, filters the received signal, and supplies the received signal thus filtered to the reception section; a circulator that (i) supplies, to the antenna, a filtered transmission signal supplied from the first filter and (ii) supplies the received signal to the second filter; and a control section that controls the second filter such that a passband of the second filter is changed, the control section controlling the second filter such that the passband of the second filter is different from a passband of the first filter in a case where a full-duplex communication is made in a first communication mode in which respective frequency bands of the transmission signal and the received signal are different from each other, the control section controlling the second filter such that (i) at least part of the passband of the first filter and (ii) at least part of the passband of the second filter overlap each other in a case where a full-duplex communication is made in a second communication mode in which the respective frequency bands of the transmission signal and the received signal match each other. |
