Phased array transmission device

A phased array transmission device comprising:

• a first transmission branch and a second transmission branch, each including:
• a transmitter, configured to transmit a transmission signal in a wireless frequency;
• a phase adjuster, configured to adjust a phase of the transmission signal;
• an amplitude adjuster, configured to adjust an amplitude of the transmission signal;
• an antenna section, configured to radiate an output signal from the transmitter into a space;
• and
• a coupler section, configured to extract a part of an output from the transmitter;
• a first branch detector and a second branch detector, configured to detect levels of outputs from the coupler sections of the first and second transmission branches, respectively;
• a signal combining section, configured to combine outputs from the coupler sections of the first and second transmission branches;
• a combination detector, configured to detect a level of an output from the signal combining section;
• an amplitude controller, configured to control the amplitude adjuster according to the outputs detected by the first and second branch detectors;
• and
• a phase controller, configured to control the phase adjuster according to the output detected by the combination detector.