The high convergent speed and small steady-state misadjustment error cannot be improved simultaneously in the power inversion array when using LMS algorithm. To solve this problem, a power inversion array using RLS algorithm is proposed. The simulation result shows that, both the RLS algorithm and LMS algorithm in the power inversion array have good anti-jamming performance.Comparing to LMS algorithm, the RLS algorithm can simultaneously get high convergent speed and small steady-state misadjustment error, but it bears a burden of large computation.