Subband sensor delay lines (SDL) performance based on linearly constrained minim um variance (LCMV) adaptive wideband beamforming algorithm is analyzed. The outp ut signal to interference plus noise ratio (SINR) of subband LCMV algorithm is derived. The performance of fullband LCMV beamforming and subband LCMV beamfo rming is compared, including array response and output SINR with different numbe r of elements, input signal to noise ratio (SNR), and element spacing. Output S INR performance of subband LCMV beamforming with different parameters of subband filter banks is also analyzed. Simulation results verify that the subband LCMV algorithm improves its performace and reduces the element need at no cost of pe rformance.