An antenna includes a slot feed on the radiator itself (On Radiator Slot Fed Antenna or ORSFA) instead of the slot feed being a separate element. One of the advantages of having the slot feed integrated onto the radiator is that the antenna is less dependent on the adjacent conductive parts, since the feed is coupling to the radiator rather than to ground (as is done in a standard slot feed antenna concept). The Q of the radiator can also be reduced for a given volume, since the coupler is removed from the antenna volume. In an embodiment the antenna can include a transmission line and an impedance match circuit directly on the radiator.