I think that switching the ground on the RF part as shown is not a problem if
you add a decoupling cap directly on the RF chip. This should work fine as lng
as the antenna is reasonably well matched to the transmitter and the unit ground
is actually floating (handheld or fully insulated). Adding a second, smaller
decoupling cap across the FET DS can also help to avoid problems.

Peter P.


-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist