33 lines
867 B
ReStructuredText
33 lines
867 B
ReStructuredText
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Helical Antenna
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===============
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Introduction
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-------------
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**This tutorial covers:**
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* setup of a helix using the wire primitive
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* setup a lumped feeding port (R_in = 120 Ohms)
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* adding a near-field to far-field (nf2ff) box using an efficient subsampling
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* calculate the S-Parameter of the antenna
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* calculate and plot the far-field pattern
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Python Script
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-------------
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Get the latest version `from git <http://www.openems.de/gitweb/?p=openEMS.git;a=blob_plain;f=matlab/Tutorials/Helical_Antenna.m;hb=refs/heads/master>`_.
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.. include:: ./__Helical_Antenna.txt
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Images
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-------------
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.. figure:: images/Helix_Ant.png
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:width: 49%
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:alt: alternate text
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3D view of the Helical Antenna (AppCSXCAD)
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.. figure:: images/Helix_Ant_Pattern.png
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:width: 49%
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:alt: alternate text
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Far-Field pattern showing a right-handed circular polarization.
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