On Mon, 03 Aug 2009 10:27:35 -0700 Dave N6NZ <[email protected]> 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 > >
> 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. You can get away with a symbol in gschem and a footprint in pcb. I hit the same problem a while ago. The pcb antenna has a driven connection and a microstrip coil ground connection all connected together DRC wise. The PCB antenna is also built up from pads, all numbered 1. In gschem I made an antenna symbol with just one pin (I use a monopole). Between the decoupling capacitor and pin 1 of the antenna I added a connection to ground, with a big warning of course. You can shape it like a microstrip coil to make it more clear. DRC accepts the shortcut now because in the gschem drawing it is also a short. Regards, Hans > > -dave > > > > > > > John > > > > > > _______________________________________________ > geda-user mailing list > [email protected] > http://www.seul.org/cgi-bin/mailman/listinfo/geda-user > -- $ cat .sig /dev/null _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
