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Feeding location to operate birdcage as lowpass coil



getLowPassLocs(birdcageantenna) returns all the feed locations on the birdcage to operate the antenna as a lowpass coil. The feeding locations are located in the center of the rungs. Use this function to find the FeedLocations property value for birdcage.


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b = birdcage;
b.FeedLocations = getLowPassLocs(b)
b = 
  birdcage with properties:

         NumRungs: 16
       CoilRadius: 0.4000
       CoilHeight: 0.0400
       RungHeight: 0.4600
     ShieldRadius: 0
     ShieldHeight: 0
          Phantom: []
    FeedLocations: [16x3 double]
      FeedVoltage: 1
        FeedPhase: 0
        Conductor: [1x1 metal]
             Tilt: 0
         TiltAxis: [1 0 0]
             Load: [1x1 lumpedElement]


Figure contains an axes object. The axes object with title birdcage antenna element contains 18 objects of type patch, surface. These objects represent PEC, feed.

Input Arguments

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Birdcage antenna, specified as an object.

Example: b = birdcage b.FeedLocations = getLowPassLocs(b)

Version History

Introduced in R2017b