PCB Layout Links

Calculating Creepage and Clearance Early Avoids Design Problems Later

Creepage and clearance distances

www.creepage.com

http://www.rogerscorporation.com
Microwave Impedance Calculator (MWIJ 1.0)

http://www.pcbexpress.com

http://www.pcbnet.com

http://www.ourpcb.com

Easy PCB boards

http://www.sigcon.com/Pubs/news/2_17.htm
http://www.google.com/search?q=cache:ZWblLV6sjaQJ:www.sigcon.com/Pubs/news/2_17.htm+%22ground+noise%22&hl=en&lr=&strip=1

What's All This Ground Noise Stuff, Anyhow?
http://www.national.com/rap/Story/0,1562,18,00.html

http://www.sigrity.com/papers/epep96/epep96mixsignal.pdf

http://www.equitech.com/articles/articles.html

http://www.smr-home-theatre.org/Ground-Loops/

Cost-effective layout of microprocessor boards
http://www.elmac.co.uk/c_e_layt.htm

http://newport.eecs.uci.edu/~payam/research.html

http://www.geofex.com/

Grounding of Mixed Signal PCBs
http://www.hottconsultants.com/techtips/split-gnd-plane.html