Abstract: Phased array can be made high efficiency, low cost, smaller, if active integrated antenna array's beam-scan-ning are realized by coupled oscillators. The article analyses an oscillator array with an arbitrary coupling network by Y-parameters, a set of differential equations for the oscillator amplitude and phase dynamics is proposed, then a novel phase-shiftless beam scanning method for active integrated antenna array is put forward according to the application, and the stability of the method is studied. The usefulness are illustrated through computer simulations.