Inkjet-printed cylindrical EBG for low-cost, omnidirectional antennas using split-ring resonators

In this paper, a low-cost, inkjet-printed, cylindrical electromagnetic bandgap structure has been designed, fabricated, and measured for increased directivity. For the EBG structure, a split-ring resonator array has been used, and increase in gain by 3dB has been achieved. This is the first ever cylindrical EBG structure that has been inkjet-printed on paper substrate, and shows promise for low-cost, omni-directional, high gain antennas for applications such as vehicular antennas, telecommunications, radar, and RFID.