Based on thorough studying of the Multiphase Array FFT De-multiplex Algorithm, the algorithm is improved by using the Orthogonal Sampling Principle, and further a implementation scheme which can benefit its hardware design is proposed. 深入研究了多相阵列FFT分路算法,基于正交采样原理对算法进行了改进。提出了一种适于硬件实现的FFT分路模块解决方案。