Madhukar , thanks for ur suggestion . Could u tell me how to understand the "no ground loop"problem?
otherwise , could u share ur experiences for layout for the Rf signals (max=1.9Ghz) and Data line (26Mhz) ?
8) For reduced EMI Emmisions use a board with 4 or more layers . two inner layers for supply and ground .
Use ferrite beads where ever it is required to reduse EMI.
Take care in seperating Analog and Digital Grounds and grounding them at a single low noise point.
Use shieldind
Still meeting EMI/EMC is a tricky affair and it may take many trials before it meets the required standards. we have many times broken our head to meet EMI461E standards and i know how difficult it is to meet them.