A phase and amplitude controlled oscillation device comprising: a reference oscillator (1, 20) outputting an oscillation frequency; a first oscillator (2, 21) adapted to generate a first output wave having a first oscillation frequency being locked to the oscillation frequency of the reference oscillator (1, 20); a second oscillator (3, 8, 31) adapted to generate a second output wave having a second oscillation frequency being locked to the oscillation frequency of the reference oscillator (1, 20); a combiner (4, 40) adapted to generate a combined output wave by combining the first output wave from the first oscillator (2, 21) and the second output wave from the second oscillator (3, 8, 31); a first controller (5, 41) adapted to control a phase of the first output wave of the first oscillator (2, 21); and a second controller (6, 42) adapted to control a phase of the second output wave of the second oscillator (3, 8, 31), characterized in that: the first and second controllers (5, 41, 6, 42) are adapted to control a phase of the combined output wave generated by the combiner (4, 40) by performing control to shift the phases of the output waves of the respective first and second oscillators (3, 8, 31) in a same direction, and to control an amplitude of the combined output wave generated by the combiner (4, 40) by performing control to shift the phases of the first and second output waves of the respective first and second oscillators (3, 8, 31) in opposite directions; wherein the first and second oscillation frequencies are equal; and first and second output waves are shifted by an equal phase-shift amount. a reference oscillator (1, 20) outputting an oscillation frequency; a first oscillator (2, 21) adapted to generate a first output wave having a first oscillation frequency being locked to the oscillation frequency of the reference oscillator (1, 20); a second oscillator (3, 8, 31) adapted to generate a second output wave having a second oscillation frequency being locked to the oscillation frequency of the reference oscillator (1, 20); a combiner (4, 40) adapted to generate a combined output wave by combining the first output wave from the first oscillator (2, 21) and the second output wave from the second oscillator (3, 8, 31); a first controller (5, 41) adapted to control a phase of the first output wave of the first oscillator (2, 21); and a second controller (6, 42) adapted to control a phase of the second output wave of the second oscillator (3, 8, 31), characterized in that: the first and second controllers (5, 41, 6, 42) are adapted to control a phase of the combined output wave generated by the combiner (4, 40) by performing control to shift the phases of the output waves of the respective first and second oscillators (3, 8, 31) in a same direction, and to control an amplitude of the combined output wave generated by the combiner (4, 40) by performing control to shift the phases of the first and second output waves of the respective first and second oscillators (3, 8, 31) in opposite directions; wherein the first and second oscillation frequencies are equal; and first and second output waves are shifted by an equal phase-shift amount. the first and second controllers (5, 41, 6, 42) are adapted to control a phase of the combined output wave generated by the combiner (4, 40) by performing control to shift the phases of the output waves of the respective first and second oscillators (3, 8, 31) in a same direction, and to control an amplitude of the combined output wave generated by the combiner (4, 40) by performing control to shift the phases of the first and second output waves of the respective first and second oscillators (3, 8, 31) in opposite directions; wherein the first and second oscillation frequencies are equal; and first and second output waves are shifted by an equal phase-shift amount.