Johanson Technology’s zero-clearance, metal-mounted antenna is designed for small coin-cell, IoT, 2.4 BLE, wearable, ISM, ZigBee, and 802.11-standard applications in close-range networks where metal or a battery/display covers the entire length or side of the PCB or encasement must be present directly under the antenna and there is no room for typical antenna metal clearance. This 2.4 GHz antenna must have metal directly underneath on the bottom layer in order to function properly.