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Helix antenna design and construction details

Detail of the feed system


Sideview - adapting and connector.
View from above. Observe the 1/4 wave section (below) which is the impedance adapter.

View from above, much nearer to the 1/4 wave section.
Another side view. Check the connector, mounted on a brass block as supplement; this way, the connector just makes contact with the adapter at the other side.

View of the complete helicoidal antenna.
Orthographic view (no perspective) of the helix.

View along the boresight towards the target - left-hand circular polarization.