[Chaostracize]

You made a standard opening bet, then bet half pot, then checked. How is villain supposed to know you're near as strong as you are. As far as I'm concerned, with the way you played, I put the rest of my chips in. This it AT-AQ far too often for you to be afraid. Medium aces love min-raising this flop to such a weak bet. And once you check the turn he probably puts you on a flush draw or something, or he thinks his AJ/AQ is good and is going for value.