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MIL-STD-1553 trace routing

TH Designs

A lot of boards I have done over the years have used MIL-STD-1553 communications. Normally these were boards where the coupling transformers were located close to the connector. The manufacturer of the coupling xfmrs and transceiver recommends not having any power or ground planes directly under the 1553 traces. For previous designs this was not an issue. I am now working on a design where I have to route the 1553 through several boards before it gets to the outside world connector.

In order to not have voids through the planes, I am planning on routing the 1553 traces down the outer edges of the boards. I was just curious if there are nay designers out there that have 1553 experience and what their thoughts on this may be.

I have contacted the Applications Engineer for the pars we are using but he only refers me to the data sheet which is somewhat vague.

Tom

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