Abstract: A double-layer Huygens′metasurface transmitarray is presented for the 5. 8 GHz microwave power transmission (MPT). The novel Huygens′ unit consists of a pair of anti-symmetric E-shaped patches of 1 mm (λ /51.7) thickness, providing the transmission phase range coverage of 360° to achieve high transmission amplitude (-0.82 dB). It breaks through the phase shift limitation of the traditional double-layer frequency selective surface element. Moreover, the high transmission efficiency results in superior radiation performance of the proposed transmitarray. The aperture area of the transmitarray prototype is 380 mm×380 mm, and the measured results show that the antenna′s gain could be achieved at 26 dB with an aperture efficiency of 58.7%. The metasurface leads to an 8.3 dB increase in received power for microwave power transmission across an 18-meter distance.