The LTC5577 IF gain seems to have a lot of ripple, looking at the datasheet figure 11.
What is the expected ripple and gain when using a 40-80MHz IF (with, say RF: 1500-4500MHz)?
The data used to generate the plots was measured on evaluation boards which includes all parasitics and losses. The IC's actual gain flatness across 10-110MHz is flatter than the apparent 0.5dB ripple…
The ripple is not bad at all. What is your requirement?
Looking at datasheet plot G03, I would say Gc slopes down from 0.7dB at 1500MHz to 0dB at 4300MHz. That is only 0.7dB tilt across almost 3GHz. The…