IPC's Microwave pwb performance spec is IPC-HF-318.  The high frequency 
design guidelines is IPC-D-316 and the high speed design is IPC-D-317.

Regards
Dave
***************************************************
David W. Bergman, Technical Director
IPC
2215 Sanders Road
Northbrook, IL  60062-6135
708-509-9700 x340 Phone
708-509-9798 Fax
email  [log in to unmask]
***************************************************


On Tue, 22 Aug 1995 [log in to unmask] wrote:

> Does anyone know what the current IPC specification is regarding 
> microwave circuit design and construction?  Also, is there any type of 
> instrument which a fabricator can use that measures controlled impedence 
> on PTFE microwave application boards.  If so, where can it be purchased 
> from? Thanks.
> 
> Robert Bormann
> CircuitWorld
> http://www.halcyon.com/rbormann/cirworld.htm
> 
>