When I entered the amplitude modulation wave exceeds 20MHZ, not detection results, it seems that only the bandwidth of 20MHZ, but the bandwidth ADL5511 is 130MHZ, really do not know where the problem is.
You appear to have a low pass filter on the output which has a corner frequency of 67 KHz. This is going to severly affect your output bandwidth. Even if you remove this, you need to be careful with the capacitive loading of the VENV output to achieve the specified bandwidth. The datasheet recommends less than 10 pF. So the ideal load for VENV is a high impedance, low capacitance load. Also pay attention to the other capacitances that need to be set based in the input frequency of your signal. (FLT2, FLT2 and FLT3).
Can someone help me?
The problem has been solved, that is, low-pass filter problem, the greater the better resistance (1M above) the smaller the better capacitance (I use the 0.5pF).
Retrieving data ...