Radio communication apparatus, radio communication method, and program

A communication control method performed by a radio communication apparatus including a duplexer which has a first terminal configured to input and output a signal in a first frequency band, a second terminal configured to input and output a signal in a second frequency band, and a third terminal connected to an antenna, a reception system circuit including a differential amplifier which has a first differential terminal and a second differential terminal, the reception system circuit configured to process a reception signal, a transmission system circuit configured to generate a transmission signal, a switch, and a replica circuit connected to the second differential terminal of the differential amplifier, the method comprising:

• in a first mode, connecting, via the switch, the first terminal to the reception system circuit, connecting the second terminal to the transmission system circuit, connecting one of the first terminal and the second terminal to the first differential terminal of the differential amplifier, and connecting the other one of the first terminal and the second terminal to the transmission system circuit;
• in a second mode, connecting, via the switch, the first terminal to the reception system circuit and the transmission system circuit alternately;
• and
• outputting, by the replica circuit, a reproduction signal to the second differential terminal of the differential amplifier,
• wherein the reproduction signal is obtained by reproducing a leakage signal leaked from the transmission system circuit to the reception system circuit through the switch.

A non-transitory computer-readable medium having stored thereon instructions, which when executed by a processor, cause the processor to control a radio communication apparatus including a duplexer which has a first terminal for inputting and outputting a signal in a first frequency band, a second terminal for inputting and outputting a signal in a second frequency band, and a third terminal connected to an antenna, a reception system circuit including a differential amplifier which has a first differential terminal and a second differential terminal, the reception system circuit configured to process a reception signal, a transmission system circuit configured to generate a transmission signal, and a replica circuit connected to the second differential terminal of the differential amplifier, by:

• controlling a switch such that, in a first mode, the first terminal is connected to the reception system circuit, the second terminal is connected to the transmission system circuit, one of the first terminal and the second terminal is connected to the first differential terminal of the differential amplifier, and the other one of the first terminal and the second terminal is connected to the transmission system circuit;
• controlling the switch such that, in a second mode, the first terminal is connected to the reception system circuit and the transmission system circuit alternately;
• and
• outputting, by the replica circuit, a reproduction signal to the second differential terminal of the differential amplifier,
• wherein the reproduction signal is obtained by reproducing a leakage signal leaked from the transmission system circuit to the reception system circuit through the switch.