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Helical Antenna
===============
Introduction
-------------
**This tutorial covers:**
* setup of a helix using the wire primitive
* setup a lumped feeding port (R_in = 120 Ohms)
* adding a near-field to far-field (nf2ff) box using an efficient subsampling
* calculate the S-Parameter of the antenna
* calculate and plot the far-field pattern
Python Script
-------------
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>`_.
.. include:: ./__Helical_Antenna.txt
Images
-------------
.. figure:: images/Helix_Ant.png
:width: 49%
:alt: alternate text
3D view of the Helical Antenna (AppCSXCAD)
.. figure:: images/Helix_Ant_Pattern.png
:width: 49%
:alt: alternate text
Far-Field pattern showing a right-handed circular polarization.
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