> >> >L1 : signal
> >> >L2 : GND
> >> >L3 : +5V
> >> >L4 : signal
> >> >L5 : signal
> >> >L6 : signal
> >> >L7 : signal
> >> >L8 : +2.5V
> >> >L9 : GND
> >> >L10 : signal
If the stripline layers are different directions ( | / \ - )
and the center two can have slightly larger line widths for
impedance then basic needs would seem reasonably met.
In the above I would place the majority supply at layer 8
and the minority supply at layer 2, with plenty of vias to
tie the grounds together and plenty of bypass caps for both
supplies, even in unloaded areas.
If the RF portion can be physically seperated then routing
it in microstrip on whichever side is the familial voltage
should be a reasonable approach, using a barrier "picket
fence" of ground vias and some spacing (rather than a cut)
to aid isolation.
Just my $0.02!
-- Jeff Seeger Applied CAD Knowledge Inc Chief Technical Officer Tyngsboro, MA 01879 jseeger "at" appliedcad "dot" com 978 649 9800 "There goes that wacky guy with the diagonal routing again"
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