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		<id>http://wiki.karljones.com/index.php?action=history&amp;feed=atom&amp;title=Smith_chart</id>
		<title>Smith chart - Revision history</title>
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		<updated>2026-10-23T15:20:31Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://wiki.karljones.com/index.php?title=Smith_chart&amp;diff=18814&amp;oldid=prev</id>
		<title>Karl Jones at 20:42, 24 September 2016</title>
		<link rel="alternate" type="text/html" href="http://wiki.karljones.com/index.php?title=Smith_chart&amp;diff=18814&amp;oldid=prev"/>
				<updated>2016-09-24T20:42:31Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class='diff diff-contentalign-left'&gt;
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				&lt;td colspan='2' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 20:42, 24 September 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The '''Smith chart''', invented by [[Phillip H. Smith]] (1905–1987), is a graphical aid or [[nomogram]] designed for [[electrical engineers]] and [[electronics engineers]] specializing in [[radio frequency]] (RF) engineering to assist in solving problems with [[transmission lines]] and [[matching circuits]].&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;[[File:Smith_chart.svg|thumb|An impedance Smith chart (with no data plotted).]]&lt;/ins&gt;The '''Smith chart''', invented by [[Phillip H. Smith]] (1905–1987), is a graphical aid or [[nomogram]] designed for [[electrical engineers]] and [[electronics engineers]] specializing in [[radio frequency]] (RF) engineering to assist in solving problems with [[transmission lines]] and [[matching circuits]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Description ==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Description ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Karl Jones</name></author>	</entry>

	<entry>
		<id>http://wiki.karljones.com/index.php?title=Smith_chart&amp;diff=15437&amp;oldid=prev</id>
		<title>Karl Jones: Created page with &quot;The '''Smith chart''', invented by Phillip H. Smith (1905–1987), is a graphical aid or nomogram designed for electrical engineers and electronics engineers s...&quot;</title>
		<link rel="alternate" type="text/html" href="http://wiki.karljones.com/index.php?title=Smith_chart&amp;diff=15437&amp;oldid=prev"/>
				<updated>2016-05-16T19:04:10Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;The &amp;#039;&amp;#039;&amp;#039;Smith chart&amp;#039;&amp;#039;&amp;#039;, invented by &lt;a href=&quot;/index.php?title=Phillip_H._Smith&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Phillip H. Smith (page does not exist)&quot;&gt;Phillip H. Smith&lt;/a&gt; (1905–1987), is a graphical aid or &lt;a href=&quot;/index.php/Nomogram&quot; title=&quot;Nomogram&quot;&gt;nomogram&lt;/a&gt; designed for &lt;a href=&quot;/index.php?title=Electrical_engineers&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Electrical engineers (page does not exist)&quot;&gt;electrical engineers&lt;/a&gt; and &lt;a href=&quot;/index.php/Electronics_engineers&quot; class=&quot;mw-redirect&quot; title=&quot;Electronics engineers&quot;&gt;electronics engineers&lt;/a&gt; s...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;The '''Smith chart''', invented by [[Phillip H. Smith]] (1905–1987), is a graphical aid or [[nomogram]] designed for [[electrical engineers]] and [[electronics engineers]] specializing in [[radio frequency]] (RF) engineering to assist in solving problems with [[transmission lines]] and [[matching circuits]].&lt;br /&gt;
&lt;br /&gt;
== Description ==&lt;br /&gt;
&lt;br /&gt;
Use of the Smith chart utility has grown steadily over the years and it is still widely used today, not only as a problem solving aid, but as a graphical demonstrator of how many RF parameters behave at one or more frequencies, an alternative to using tabular information.&lt;br /&gt;
&lt;br /&gt;
The Smith chart can be used to simultaneously display multiple parameters including impedances, admittances, reflection coefficients, S_{nn}\, scattering parameters, noise figure circles, constant gain contours and regions for unconditional stability, including mechanical vibrations analysis.&lt;br /&gt;
&lt;br /&gt;
The Smith chart is most frequently used at or within the unity radius region.&lt;br /&gt;
&lt;br /&gt;
However, the remainder is still mathematically relevant, being used, for example, in [[oscillator design]] and [[stability analysis]].&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
&lt;br /&gt;
* [[Nomogram]]&lt;br /&gt;
&lt;br /&gt;
== External links ==&lt;br /&gt;
&lt;br /&gt;
* [https://en.wikipedia.org/wiki/Smith_chart Smith chart] @ Wikipedia&lt;br /&gt;
&lt;br /&gt;
[[Category:Electrical engineering]]&lt;br /&gt;
[[Category:Electronic engineering]]&lt;/div&gt;</summary>
		<author><name>Karl Jones</name></author>	</entry>

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