It is predicted that 5G reaches the market in 2020 and to fulfil its expectations there will be a great demand for lower latency, higher data rates and better energy efficiency. Taking in consideration the bands allocated for 5G in Europe, a compact millimeter wave dual-band 28/38 GHz antenna is presented. The structure is based on a dual-band printed monopole, with a feeding network that efficiently guarantees the matching along both frequencies of operation. Additionally, it has acceptable bandwidths making of this an adequate antenna to use in 5G communications, integrated in IoT sensor networks.