[HN Gopher] How to make a Smith chart
       ___________________________________________________________________
        
       How to make a Smith chart
        
       Author : tzury
       Score  : 61 points
       Date   : 2025-10-24 17:18 UTC (5 hours ago)
        
 (HTM) web link (www.johndcook.com)
 (TXT) w3m dump (www.johndcook.com)
        
       | btkramer9 wrote:
       | I loved smith charts during my microwave classes in college. I've
       | always felt like there should be a fun game based on the
       | mechanics of using a smith chart.
        
         | dmd wrote:
         | I'm just amazed there isn't a nearly impenetrable Greg Egan
         | book based on them.
        
         | uzby wrote:
         | This software is so good it is as enjoyable as any game, it
         | taught me to love Smith Charts
         | 
         | https://www.ae6ty.com/smith_charts/
        
       | munchler wrote:
       | > The Smith chart from electrical engineering is the image of a
       | Cartesian grid under the function f(z) = (z - 1)/(z + 1). More
       | specifically, it's the image of a grid in the right half-plane.
       | 
       | Well, I'm already confused. The domain is complex numbers where
       | the real part is >= 0? I think it would be helpful to make that
       | clear from the get-go. When I see "Cartesian grid", I think R^2,
       | not C.
        
       | _whiteCaps_ wrote:
       | I have PTSD from learning Smith charts in school.
       | 
       | My prof even said to me "If you'd pay attention, you'd understand
       | this!". I was the only one who was brave enough to ask questions
       | about it!
        
         | OldSchool wrote:
         | Heh, this reminds me, don't worry:
         | 
         | One of my extremely intelligent roommates in the 80s switched
         | from EE to CS, seemingly due to Smith charts and
         | Electromagnetics coursework.
         | 
         | He went on to make a large fortune in software.
        
       | mbostock wrote:
       | I made an interactive implementation here:
       | https://observablehq.com/@mbostock/smith-chart
        
         | aeontech wrote:
         | that's beautiful!
        
       | bmiekre wrote:
       | These are wormhole graphs, right?
        
       | hammock wrote:
       | Is this related to Cardioid patterns for directional microphones?
        
       | kazinator wrote:
       | [delayed]
        
       | kazinator wrote:
       | [delayed]
        
       ___________________________________________________________________
       (page generated 2025-10-24 23:00 UTC)