A planar metal is proposed to decouple and correct the radiation pattern of two closely spaced patches separated by λ0⁄20 in the H-plane. The metal is close enough to the patch edges to induce the near-field power, and the length is about one effective wavelength λ of 5.80 GHz. As a result, the isolation at 5.80 GHz is improved from 7.30 to 16.34 dB. In addition, the realized gain of E-plane is enhanced by 2.85 dB, and the maximum radiation in the H-plane is almost corrected to be in the broadside direction, where the beamwidth is broadened to be 50° with only 0.2 dB fluctuation and the realized gain is almost no decrease comparing with those of no-decoupling structure.