>> A ground plane Is the loop in the GND/Power signals in this design really so much of =20 a problem? With many modern chips having power on each side, I've =20 done (or rather, thought about doing) similar things in order to keep =20 a PCB single-sided. 1) The chips involved are small, so it's not a BIG loop. 2) As an antenna, you'd be looking at relevant frequencies of ~1GHz or =20 more; well above the operating frequency of the circuits. 3) Bypassing at each end (or at multiple points?) ought to mostly =20 negate inductance issues of the "long" traces. 4) I like having a loop of GND around the edge of my board even if =20 it's not specifically required by power wiring. It feels like cheap =20 protection against ESD (contact with 'stuff' quickly shorts to GND =20 rather than entering a chip signal pin.) Does this become a bad =20 idea? (This includes a loop of GND on the PCB side opposite the =20 Ground plane, when doing a double-sided PCB.) Trying to keep the PCB single-sided, is star-shaped gnd/power made of =20 jumper wires any better? In the interests of short straight jumpers, =20 I've shaped GND/PWR into loop-like structures around the chips and =20 components on a board, rather than splayed or grid-like structure. No ? Thanks BillW --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .