An isotropic electromagnetic (EM) lens based on Huygens’ metasurface is proposed for 28.0 GHz lens antenna design. .The lens consists of a series of non-resonant and subwavelength metallic patterns etched on both sides of an ultrathin .dielectric substrate. Both electric and magnetic responses are introduced to realize desired abrupt phase change and .high-efficiency transmission for the secondary wavelets in the incident wavefront. Then, a substrate-integrated wa