X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com Message-ID: <4EAB7CAD.2080902@innocent.com> Date: Sat, 29 Oct 2011 00:10:21 -0400 From: Gus Fantanas User-Agent: Mozilla/5.0 (X11; Linux i686; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 MIME-Version: 1.0 To: geda-user AT delorie DOT com CC: Peter Clifton Subject: Re: Speaking of Microwaves (WAS: Re: [geda-user] Working with a 0.1mm grid) References: <1319310645 DOT 13417 DOT 8 DOT camel AT localhost> <201110230311 DOT p9N3BRr8005619 AT envy DOT delorie DOT com> <20111023185825 DOT GA24148 AT malakian DOT lan> <20111025120859 DOT GA5110 AT iram DOT es> <201110251224 DOT p9PCOk8L024200 AT envy DOT delorie DOT com> <20111026082721 DOT GA18280 AT iram DOT es> <1319670477 DOT 5698 DOT 8 DOT camel AT localhost> <20111026234856 DOT GB7333 AT iram DOT es> <4EA8E608 DOT 7020002 AT innocent DOT com> <20111027082052 DOT GB5076 AT iram DOT es> <1319847840 DOT 26870 DOT 1 DOT camel AT localhost> In-Reply-To: <1319847840.26870.1.camel@localhost> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Reply-To: geda-user AT delorie DOT com On 10/28/2011 08:24 PM, Peter Clifton wrote: > On Thu, 2011-10-27 at 10:20 +0200, Gabriel Paubert wrote: > >> To my knowledge, the only commonlyly used structure that is difficult >> to draw with PCB is the radial stub. > Can you point me at a picture or diagram showing what such a structure > should look like, and which are the important dimensions to get correct. > > Perhaps it is something we can improve. > http://en.wikipedia.org/wiki/Distributed_element_filter (look at figures 7 and 13 for a real-life radial stub) http://www.hp.woodshot.com/hprfhelp/4_downld/lit/diodelit/an976.pdf (p. 4 for some theory)