Radio transmitter test system

A radio transmitter test system comprising:

• an antenna connected to a coaxial cable;
• a signal generator configured to generate a high-frequency signal;
• a power amplifier configured to amplify power of the high-frequency signal;
• a simulative antenna for which a voltage standing wave ratio indicating a transmission efficiency of high-frequency power is variable and that is connected to the coaxial cable in place of the antenna;
• a directional coupler that is connected between the power amplifier and the simulative antenna, is configured to couple a high-frequency signal whose power has been amplified to the simulative antenna, and to output traveling wave power and reflected wave power between the power amplifier and the simulative antenna;
• a power meter that is connected downstream of the directional coupler and is configured to measure the traveling wave power and the reflected wave power output from the directional coupler;
• and
• a control device configured to calculate reflected wave power of the antenna,
• wherein the control device includes:
• a correlation coefficient calculating unit configured to calculate, for each voltage standing wave ratio of the simulative antenna, a correlation coefficient indicating a correlation between traveling wave power and reflected wave power of the simulative antenna and the traveling wave power and the reflected wave power measured by the power meter;
• and
• a power value calculating unit configured to calculate reflected wave power of the antenna by correcting, with the correlation coefficient, the traveling wave power and the reflected wave power measured by the power meter in a state where the simulative antenna is replaced by the antenna.