I plan to use the HMC637A in a new design, but I have very little room for the low frequency terminations (4.7uF tantalum on ACG2 and ACG4). At what frequency are these required? If I am at 1.5GHz and above, do I need them? I know on the HMC797’s they are not needed unless we want to extend down to DC-hundreds of MHZ. Thanks.