Hi
I am generating a
Frequency sweep (in Ramp Up-Down configuration):
Start: 2.4 GHz
Stop: 2.485 GHz
Sweep time/sweep rate: 1 μs/ 1 MHz
But i am unable to get gain flatness across the sept band as show in Figure below there is a difference of almost 4.3 dB in swept band give me a better VCO option which can used for this condition 
i am also planning to Change Specification to below Configuration
Frequency sweep 1 (in Ramp Up-Down configuration):
Start: 2.4 GHz
Stop: 2.485 GHz
Sweep time/sweep rate: 0.1 μs/ 10 MHz
is it Possible to achieve gain flatness across the sept band with this IC
if not Please provide me the Vco detail with which i will able to achieve this rate
also what are parameters which i should look into to see whether Vco is capabale