i have tested my design upto -45dBm , which is way better than Agilent Spec.
what are your values?
-45 dBm at what frequency?
The best I got was -70 dBm on one board, but in a limited BW. The typical values are better than -45 dBm across most of the range, with almost every board hitting -60 dBm at some point.
For example (typical values, not best):
-49 dBm @ 500 MHz
-53 dBm @ 1 GHz
-53 dBm @ 2 GHz
-44 dBm @ 3 GHz