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From: | "Peter Clifton (petercjclifton AT googlemail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> |
Date: | Sat, 28 Jan 2017 20:54:16 +0000 |
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Subject: | Re: [geda-user] PCB antenna question |
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--001a1141068c1ec47605472dc9db Content-Type: text/plain; charset=UTF-8 On 28 Jan 2017 20:41, "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) > For the pcb resistor / inductors, I guess similar could work - although it > is probably desirable to implement within some kind of "footprint" like > construct in order to get the end connection points tested as a part of the > netlist. An almost normal pad would do the trick. A normal pad have show up in the solder mask and paste layer but this should almost certainly not. You can shrink the mask and paste apertures to zero, which helps now. An antenna might also want to force a cleared solder mask area, again requiring trickery (zero width copper in pads has been used before, with a wide mask openning IIRC). Longer term, it would be nice to allow more flexibility of what items can be used in a footprint, and what "layers" can be used. (One common desire is an odd shaped slot as part of a footpring). pcb-rnd seems to be heading in a good direction here. I'm hopeful we can extend our file format(s) to support similar too. Peter --001a1141068c1ec47605472dc9db Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"auto"><div><br><div class=3D"gmail_extra"><br><div class=3D"gma= il_quote">On 28 Jan 2017 20:41, "Nicklas Karlsson (<a href=3D"mailto:n= icklas DOT karlsson17 AT gmail DOT com">nicklas DOT karlsson17 AT gmail DOT com</a>)</div><div cl= ass=3D"gmail_quote" dir=3D"auto"><br></div><div class=3D"gmail_quote" dir= =3D"auto"><blockquote class=3D"quote" style=3D"margin:0 0 0 .8ex;border-lef= t:1px #ccc solid;padding-left:1ex"><div class=3D"quoted-text"> > For the pcb resistor / inductors, I guess similar could work - althoug= h it<br> > is probably desirable to implement within some kind of "footprint= " like<br> > construct in order to get the end connection points tested as a part o= f the<br> > netlist.<br> <br> </div>An almost normal pad would do the trick. A normal pad have show up in= the solder mask and paste layer but this should almost certainly not.<br><= /blockquote></div></div></div><div dir=3D"auto"><br></div><div dir=3D"auto"= >You can shrink the mask and paste apertures to zero, which helps now.</div= ><div dir=3D"auto"><br></div><div dir=3D"auto">An antenna might also want t= o force a cleared solder mask area, again requiring trickery (zero width co= pper in pads has been used before, with a wide mask openning IIRC).</div><d= iv dir=3D"auto"><br></div><div dir=3D"auto">Longer term, it would be nice t= o allow more flexibility of what items can be used in a footprint, and what= "layers" can be used. (One common desire is an odd shaped slot a= s part of a footpring). pcb-rnd seems to be heading in a good direction her= e. I'm hopeful we can extend our file format(s) to support similar too.= </div><div dir=3D"auto"><br></div><div dir=3D"auto">Peter</div><div dir=3D"= auto"><div class=3D"gmail_extra"><div class=3D"gmail_quote" dir=3D"auto"><b= lockquote class=3D"quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc s= olid;padding-left:1ex"> </blockquote></div><br></div></div></div> --001a1141068c1ec47605472dc9db--
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