www.delorie.com/archives/browse.cgi   search  
Mail Archives: geda-user/2016/08/01/12:51:29

X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=gmail.com; s=20120113;
h=date:from:to:subject:message-id:in-reply-to:references:mime-version
:content-transfer-encoding;
bh=AW/DY0DGZE/9vcNP8gNE9Zref6MeQXL9iIKxGzA2pEo=;
b=ddAbTNpyQy4CbDfC6xkaGSEQXiEIYi7jVkX5SmuJAc7YY6AugAs/mSO3W7jBI7xvVf
CBNr2S3KZ7dktYRrhswr1ZckMy36Uet6V0NfP2dA1TxUauJYMWVnCysgGydPsAHdGfuD
fJq4cp6ZFXHVaSJwMUWRv/6pFycSjG3KdVPLLgf7m+SWli6L/VuhvGRUwtkRiXYat4sn
sFIxh9LWelnbTTSeS//qeu0SVUQEHkaR6+7op0ZGPNlvQvuiosmb/ZF9/XsTr/Fdb/Oe
WSHHCQE0JBzpzuApYxaoLOQjT3V9l6MK3R/g+0ImsL1d+y03vpfGjnjHteEznAe99TLf
xqUw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=1e100.net; s=20130820;
h=x-gm-message-state:date:from:to:subject:message-id:in-reply-to
:references:mime-version:content-transfer-encoding;
bh=AW/DY0DGZE/9vcNP8gNE9Zref6MeQXL9iIKxGzA2pEo=;
b=B8B9k3+C5jCBWge/X8xCpfafynLiQVTfVVjsPlACFK0rhSzmsWdpiHf4pUkvkTc+OE
UvqdLArn7B+d6uM/t7BjHKIZDD+rzgTOBEHF1wpeajupXwzshyouuVQSKXlTozACJQ8w
voCScS75kFUXEfg5s0ONXq1fyANVBWoVkrTdyuVvVVjxywRF7h8Z87JSmnpZ7iUsYCj4
uQzdcffuG2lVWdOELEMZrTD22f2CFpMMfQttpH5tEcYE6aqrDcL4QVkkGejKmOK1i1WR
k8Leq70t4+yl420kbFPlm9x7R0fRzOzzpXvwPO0P6aJ/opWFDxmhABe0ZnyqttNvLmg8
HE9g==
X-Gm-Message-State: AEkoousdI3UoKuhQ6/AFU+Rj57N9ISSbNzNbk9aR+O+FsrUKyPrhhywg6k+uonmexgJUaQ==
X-Received: by 10.194.185.202 with SMTP id fe10mr49735080wjc.93.1470070217414;
Mon, 01 Aug 2016 09:50:17 -0700 (PDT)
Date: Mon, 1 Aug 2016 18:50:15 +0200
From: "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] Wilkinson splitter - how to implement and use?
Message-Id: <20160801185015.edae375574bda1bd4614a6cd@gmail.com>
In-Reply-To: <alpine.DEB.2.00.1608011842580.7286@igor2priv>
References: <23abdc31 DOT 72365e7a DOT 572529a9 DOT 212e2 AT o2 DOT pl>
<a5562efe70ac4b83b066facd19a46167 AT gwp>
<alpine DOT DEB DOT 2 DOT 00 DOT 1608011842580 DOT 7286 AT igor2priv>
X-Mailer: Sylpheed 3.5.0beta1 (GTK+ 2.24.25; x86_64-pc-linux-gnu)
Mime-Version: 1.0
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com

> >Dear Members,
> >
> >I need to design a RF board with some Wilkinson splitters on it. While the
> >symbol of splitter is ready (rf/splitter-1.sym) and for pcb we have even a
> >java generator
> >(https://github.com/erichVK5/WilkinsonPowerDividerFootprintGenerator), I'm
> >not sure how to use it. The splitter is just a few fancy tracks on pcb (plus
> >a resistor) that in fact are all connected. In schematics however this is an
> >element with 3 pins. In pcb I can not name the splitter pins "1", "2", "3",
> >because this will give warnings about shorted nets. If I change schematics
> >symbol (short its pins) there will be no warnings but all RF nets are
> >reduced to one - that is not the case (all splitter input/output connections
> >are lost).
> >
> >Is there a better/preferred way to deal with such RF components in gEDA?
> >Thanks in advance,
> >Michael Widlok
> >
> 
> In pcb-rnd I see an ugly workaround for this: two footprints. One 
> normal footprint with 3 separate terminals, so the netlist can ensure you 
> connect the right things to the right places. Another footprint with a 
> "track drawn of pads" (hack), marked as "nonetlist", placed on top of the 
> first footprint. This would physically connect the three terminals, on 
> copper, but because of the nonetlist flag pcb-rnd would still think 
> there's no connection (DRC-wise).

No problem. Ordinary copper on pins but nonetlist flag in between. There may be need to add extra overlapping copper with and without flag.

> 
> Regards,
> 
> Igor2

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019