Abstract: In this paper,we analyze a high gain metamaterial cover based on metal cylinder array,and use it to increase the gain of dipoles from 2.15dB to 14.5dB,with narrow beam and low side-lobe levels.And then provides the use of metal strips etched on printed circuit board(PCB) process to substitute the metal cylinders in order to reduce weight and be easy in processing.The structure can also greatly increase the gain of dipoles and possess good practical engineering application.