Hard Beat, But Avoidable?

[NotStudying]

The tenderness on this site is really quite touching!

Okay, so my post-flop minimum bet wasn't enough to scare him away. My goal was to drive out unmade draws, but keep in the K-x, AA, QQ folks who'd called (but not raised) my pre-flop raise. Though none of you has said so, it's obvious you think what I bet didn't strike this balance. Where is that balance? Or is it possible to achieve at that point?