Dave N6NZ wrote: > John Griessen wrote: >>> Tamas Szabo wrote: >> Since all part of the antenna >>>> lines consist of pads, it seems to be a short circuit between the >>>> terminals >> Another thing to explore is about how in PCB pads >> aren't handled just the >> same DRC-wise as lines and no lines are >> allowed in a footprint (as of now). >> >> What if you use two pad numbers, put a bunch of lines-that-become-pads >> in your footprint, and let one pad number touch the other? >> >> Does PCB allow that? Is that what you already did? >> >> John >> >> Here's two more work-arounds: >> >> 1. Let the symbol be two pins, but same number. Then everything else will >> be OK, >> you just won't have a footprint the will check for installed backwards -- >> who cares? > > Well, presumably the antenna driver is two different pins from a amp > that drives the two sides of the transmission line. So it will still > appear to DRC as two nets being shorted. > >> 2. Don't use a symbol or footprint at all, just an area of layout saved >> and importable >> where you like, and noted on schematics as a layout area by comments. I >> like this way. >> Your printed wiring antenna IS a layout zone. > > Or.... > > 1. On the schematic, don't use a symbol, just connect driver pin 1 and > driver pin 2 with a short on the schematic. You can draw the "short" on > the schematic in an artistic fashion to look like an antenna. > > 2. In PCB, you will have to pull in the antenna footprint manually. Or > I suppose you could have an unconnected symbol on the schematic have the > antenna as a footprint so that the netlister will include the symbol. > Or maybe even have an antenna symbol, and let it connect it's two pins > with a 'net' attribute that ties the two pins together. Actually... > that last idea is probably best, but you'll have to test it... it's been > a while since I tried a snakey trick like that. > > 3. In PCB, connect the driver pins to the antenna footprint normally. > The antenna footprint should have the same pin number on both ends. It > will look like a short. DRC expects a short. Everybody is now happy. > > -dave > > > >> John >> >
First of all, thanks for the many suggestions. Well, later I will try (some of) them, but I think, I keep the "orange" for now, to speed up the design. > > > _______________________________________________ > geda-user mailing list > [email protected] > http://www.seul.org/cgi-bin/mailman/listinfo/geda-user > > _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
