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.

Images

alternate text — 3D view of the Helical Antenna (AppCSXCAD)

alternate text — Far-Field pattern showing a right-handed circular polarization.