RADIO TRANSMISSION/RECEPTION DEVICE, AND TRANSMISSION POWER MEASURING METHOD FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To reduce a circuit scale for measuring a transmission power of a radio communication device by its own device.

SOLUTION: A radio transmission unit 11 generates a transmission signal containing a transmission carrier. A radio receiving unit 14 includes a down converter 140 performing a frequency down conversion of a received signal containing a received carrier with substantially equal frequency to the transmission carrier. A transmission/reception separating circuit 12 includes: a port P1 connected to the radio transmission unit 11; a port P2 connected to the radio receiving unit 14; and a port P3 connected to an antenna 13. The transmission/reception separating circuit 12 outputs the transmission signal into the port P1 to the port P3 and the received signal into the port P3 to the port P2. A transmission power control unit 16 performs control related to a transmission power of the transmission signal based on a low-frequency signal obtained by supplying a leakage component of the transmission signal leaking from the port P1 to the port P2 to the down converter 140 and down-converting it.

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