Ed,

I've used Rogers RO3003 in a 1GHz digitiser design for the outer microstrip
layers, and then conventional FR4 for the inner power plane cores. (the
Rogers material is about 8x the cost of FR4).
FR4 would probably have too high a loss tangent at these frequencies, and
the Er varies too much with temperature.
May be worth looking at other Rogers materials also (perhaps RO4003)
Cyanate ester or Polyimide may be worth looking at too. (cheaper)
(thanks to Mr Rick Hartley for some of this info)

regards,

Phil.

At 12:27 31/08/00 -0500, you wrote:
>Any Suggestions or observations on Mat'l for 50 ohm at 2 ghz
>
>Thanx Ed


Phil Dutton C.I.D.
Senior CAD Technician
IPC Certified Interconnect Designer

Tenix Defence Systems Pty Ltd
Systems Division - Adelaide
Second Avenue, Technology Park,
Mawson Lakes.  SOUTH AUSTRALIA  5095

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