Simple can antenna for ADS-B 1090MHz reception

Here is a simple and easy to build antenna for ADS-B reception at 1090MHz:

What you need:
1x Aluminium can, length/height 69mm, outer diameter 44mm (mine was a spice can, Knorr/Unilever Aromat, EAN 40387444)
1x Brass pipe, 200mm length, outer diameter 2mm, inner diameter 1mm
1x SMA panel mount socket with front side nut

How to build:

• Cut the can to 69mm length. (Quarter wave length of 1090MHz)

• Drill a 6mm hole center bottom.

• Solder the brass pipe to SMA socket center pin.

• Cut the brass pipe length exactly to 194mm (see picture).

• Mount SMA socket in previously drilled center hole in can.

• That's all.

The antenna has a fairly broad resonance, accepts therefore some mechanical tolerances.

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