There will be no issue on this, as it is so small that it isn’t any concern. They are looking for explosives and guns, (of course a myriad of other things such as large quantities of liquids)
My recent trip to Puerto Rico and back I carried three Gotennas and a small drone on carry on and no one at security seemed to give it a second thought. I wouldn’t worry about taking them on flights.
I literally just got back from 6 flights in 4 days (including international legs!) and took 20 goTenna Mesh in a bag in my carry-on and no one blinked