Arduino are the makers of the eponymous maker/hobbyist/small-scale electronics boards used widely across the world, including their Arduino MKR NP board ABX00019. We’ve had a number of questions on this board asking whether it ships with its necessary antenna or not, and what that antenna might be for replacement purchases.
This particular board does not include the antenna. If you’d like to obtain one separately, or obtain replacements for an existing project, that part number is X000016.