I fabbed the gerbers of the eval board for the SKY67153-396LF and used the component values in the datasheet for the 2300 to 2700 MHz band. I tested it yesterday and got some interesting results. There are several different regions of behavior that it has, most of which seem wrong. Here's a video of me sweeping the input power and you can see what's happening: https://www.youtube.com/watch?v=IT8x9wOr9ag Here's a version where you can see the current being used by the amp: https://www.youtube.com/watch?v=eZGxI3nrgM8
It's kind of hard to see the spectrum analyzer, but the marker is at 2.52 GHz, the same as the input freq. The span is from 0 to 6.5 GHz. The amp has very little gain until the input power gets up to a few dBm, and doesn't get close to the correct gain spec until 7 dBm. That's also when all the mixing products (or whatever those spurs are) go away.
Can someone help me understand what's going on in these different regions? What causes those mixing products? Why doesn't amplification begin until a particular input power level?