Mounting Access Points Between Floor Joists

I’ve had good results in the past running an AP pointed up and wanted to try that for another install. The last time I was able to simply rest the AP on a center beam that ran the length of the house but now I’d like to go between some joists that have nothing below them. Anyone have a good recommendation for a bracket that could work? This will be for a UAP-AC-LR if it makes a difference.

Put a 2x4 across the space to rest the AP on, could probably even go with a 1x4 or 1x2.

That’s a great simple idea. Didn’t think of it but that will work.