5.8 GHz Helix Antenna
This is an example how one can hit the target on spot with a clean build even on 5.8GHz.
Antenna dimensions:
- Design frequency 5800MHz
- 8 turns
- Wavelength 0.23
- Internal diameter 17-17.5mm
- Wire diameter 1mm
- Coil spacing 11.8mm
- Reflector 40mmx40mm
- Wave Trap size 6.5mmx3.2mm
- Wave Trap spacing from feed point 2mm
- Feed point height 2.5mm (wire center), maintained over 1/4 turn
![5.8GHz Helix](/img/2011/07/5800MHz_Helix.jpg)
![5.8GHz Helix Feedpoint](/img/2011/07/5800MHz_Helix_Feedpoint.jpg)
![5.8GHz Helix Feedpoint Height](/img/2011/07/5800MHz_Helix_Feedpoint_Height.jpg)
![5.8GHz Helix Wave Trap](/img/2011/07/5800MHz_Helix_WaveTrap.jpg)
![5.8GHz Helix Return Loss](/img/2011/07/5800MHz_Helix_ReturnLoss.jpg)
![5.8GHz Helix Return Loss tuned](/img/2011/07/5800MHz_Helix_ReturnLoss_Tuned.jpg)
![5.8GHz Helix VSWR](/img/2011/07/5800MHz_Helix_VSWR.jpg)
![5.8GHz Helix VSWR not tuned](/img/2011/07/5800MHz_Helix_VSWR_NotTuned.jpg)
![5.8GHz Helix VSWR tuned](/img/2011/07/5800MHz_Helix_VSWR_Tuned.jpg)
![5.8GHz Helix Smith chart](/img/2011/07/5800MHz_Helix_SmithChart.jpg)
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