Abstract: The nonlinear correlation problems for digital arrays are analyzed in this paper. Then a novel approach is proposed to increase the Instanuouse Dynamic Range (IDR) levels for digital arrays. The method mainly employs two different direction phase shifts. The theoretical analysis of the proposed method shows that dynamic range enhancement can be achieved through the use of the method and decorrelation of spurs, phase noise, and various intermodulation products. Simulation results show the effectiveness of the proposed method.