Model

As you can see in the right figure, we take 4 x 4 helical array antenna. Each antenna elements has a hole on the blue ground plane and they are connected to coaxial waveguides.

Each waveguide sets a signal input port independently, so you can input different signal pattern from the others. It happens to be appear the array are ordered in equidistant manner, you can place them at any place you want. Our automatic grid generator generates adopted grid systems.

The right figure shows the result which are set the same phase to the all input coaxial ports.

You can see the beam of the electromagnetic wave much concentrated in the z direction than that of single helix antenna model.
 

The last figure shows the result of calculated directivity tilted from z-axis. This is because we set the phase shift should be titled in 5 degree from z-axis toward x-axis at 2.4 GHz.

Attachments:

helical_array_antenna_sample

[EM data file for Helical Array Antenna]

676 kB