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Open Source Corrugated Stepped Ridge Horn Antenna for 2-6 GHz

Am ultra-wideband antenna for 2-6 GHz with waveguide


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Based on original design: Corrugated Horn Antenna by SabinKarki


An ultra-wideband corrugated horn antenna designed for the 802.11a-ac frequencies. The corrugated horn part was designed by SabinKarki and was resized for 2-6 GHz application. The ridged antenna and the waveguide was build according to the machine drawings of Vegard Midtbøen's Master thesis[1].

The design includes STL files of the parts and a FreeCAD file that serves as a basis for the STL files. The upper waveguide includes a 1mm gap for the SMA-waveguide adapter described in [1].

The antenna is a prototype for testing system in 802.11a-ac frequencies and thus lacks metallic finish necessary for operation and operating characteristics not been measured.

This is a part of coursework for Spring 2018 ELEC-L3999: 3D Printing of Open Source Hardware for Science (Aalto University, Espoo) by Dr. J.M. Pearce.

[1]Midtbøen, V. 2007. 3D Printed Horn Antenna for Ultra Wideband Applications. Master Thesis. University of Oslo. Department of Informatics. Faculty of mathematics and natural sciences. Oslo. 135p. URN:NBN:no-59998. https://www.duo.uio.no/handle/10852/57403?show=full [Accessed 24.03.2018]

Materials and methods

3D FFF Printed with PLA using Lulzbot TAZ 6 for the horn and Lulzbot mini for the waveguide. Layer height was set to 0.2mm for the horn and 0.16mm for the waveguide.

- Print
2x Horn.stl
1x Wvg Back Down.stl
1x Wvg Back Up.stl
1x Wvg Front Down.stl
1x Wvg Front Up.stl
- Assemble with bolts and nuts:
Both half-horns
Wvg Front Down to Up
Wvg Front to Horn
Wvg Back Up to Down
Wvg Front to Wvg Back

Wvg Back Up and Down can be interchanged.

Non-printed parts:
10x M3x25 bolts
2x M3x20 bolts
12x M3 nuts

Additional work required:
Copper coating and taping

Additional parts not included:
SMA to waveguide adapter



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4f6da8bcc83f3fdebdd04decc1451ec6?default=blank&size=40ahbento added this to the IMP 3D / ACESSORIOS / CNC collection ago
Eb62e1923c46a6a1c68c9473a8e06f98?default=blank&size=40VGurkalov published this design ago