An optical and electrical hybrid beamforming transmitter (100, 200), comprising: a first photoelectric converter (111, 113, 210), configured for converting a first optical signal (o1, o2, o3, o4, o5, o6) into a first initial electric signal (iel, ie2, ie3); a first adjusting circuit (131, 133, 230, 751, 753, 850), coupled to the first photoelectric converter (111, 113, 210), configured for delaying the first initial electric signal (iel, ie2, ie3) according to an expected beam pattern formed by an antenna array (170, 270, 710, 810) to output a first adjusted electric signal (aj1, aj2, aj3, aj4, aj5, aj6); a second photoelectric converter (111, 113, 210), configured for converting a second optical signal (o1, o2, o3, o4, o5, o6) into a second initial electric signal (iel, ie2, ie3); a second adjusting circuit (131, 133, 230, 751, 753, 850), coupled to the second photoelectric converter (111, 113, 210), configured for delaying the second initial electric signal (ie1, ie2, ie3) according to the beam pattern to output a second adjusted electric signal (aj1, aj2, aj3, aj4, aj5, aj6), wherein the optical and electrical hybrid beamforming transmitter (100, 200) is characterized in that the first adjusting circuit (131, 133, 230, 751, 753, 850) and the second adjusting circuit (131, 133, 230, 751, 753, 850) are calibrated to an initial phase, and are configured to apply a subsequent phase adjustment of the first initial electric signal (iel, ie2, ie3) and the second initial electric signal (iel, ie2, ie3) in response to the calibration to an initial phase; and the antenna array (170, 270, 710, 810), comprising: a first antenna (171, 173, 711, 713), coupled to the first adjusting circuit (131, 133, 230, 751, 753, 850); and a second antenna (171, 173, 711, 713), coupled to the second adjusting circuit (131, 133, 230, 751, 753, 850), wherein the antenna array (170, 270, 710, 810) is configured for radiating electromagnetic wave according to the first adjusted electric signal (aj1, aj2, aj3, aj4, aj5, aj6) and the second adjusted electric signal (aj 1, aj2, aj3, aj4, aj5, aj6). a first photoelectric converter (111, 113, 210), configured for converting a first optical signal (o1, o2, o3, o4, o5, o6) into a first initial electric signal (iel, ie2, ie3); a first adjusting circuit (131, 133, 230, 751, 753, 850), coupled to the first photoelectric converter (111, 113, 210), configured for delaying the first initial electric signal (iel, ie2, ie3) according to an expected beam pattern formed by an antenna array (170, 270, 710, 810) to output a first adjusted electric signal (aj1, aj2, aj3, aj4, aj5, aj6); a second photoelectric converter (111, 113, 210), configured for converting a second optical signal (o1, o2, o3, o4, o5, o6) into a second initial electric signal (iel, ie2, ie3); a second adjusting circuit (131, 133, 230, 751, 753, 850), coupled to the second photoelectric converter (111, 113, 210), configured for delaying the second initial electric signal (ie1, ie2, ie3) according to the beam pattern to output a second adjusted electric signal (aj1, aj2, aj3, aj4, aj5, aj6), wherein the optical and electrical hybrid beamforming transmitter (100, 200) is characterized in that the first adjusting circuit (131, 133, 230, 751, 753, 850) and the second adjusting circuit (131, 133, 230, 751, 753, 850) are calibrated to an initial phase, and are configured to apply a subsequent phase adjustment of the first initial electric signal (iel, ie2, ie3) and the second initial electric signal (iel, ie2, ie3) in response to the calibration to an initial phase; and the antenna array (170, 270, 710, 810), comprising: a first antenna (171, 173, 711, 713), coupled to the first adjusting circuit (131, 133, 230, 751, 753, 850); and a second antenna (171, 173, 711, 713), coupled to the second adjusting circuit (131, 133, 230, 751, 753, 850), wherein the antenna array (170, 270, 710, 810) is configured for radiating electromagnetic wave according to the first adjusted electric signal (aj1, aj2, aj3, aj4, aj5, aj6) and the second adjusted electric signal (aj 1, aj2, aj3, aj4, aj5, aj6). a first antenna (171, 173, 711, 713), coupled to the first adjusting circuit (131, 133, 230, 751, 753, 850); and a second antenna (171, 173, 711, 713), coupled to the second adjusting circuit (131, 133, 230, 751, 753, 850), wherein the antenna array (170, 270, 710, 810) is configured for radiating electromagnetic wave according to the first adjusted electric signal (aj1, aj2, aj3, aj4, aj5, aj6) and the second adjusted electric signal (aj 1, aj2, aj3, aj4, aj5, aj6).