Updated: May 26
the shape is triangular, pointy at the bottom with a wide curve at the top.
At first the Wi-Fi icon was a vertical line with the triangle on top, like an antenna. Then I needed a shape to represent 'filter' as in refining a search. Wi-Fi version 1 seemed more like a filter with a long neck. This latest Wi-Fi version removes the antenna post and adds a little nub at the base. This shape is closer to the visual icon and does not interfere with any other shape in the HALOS collection.
Not tested yet.