Ivan-Holm
Member level 5
Hi
We have tried to make an Helix antenna on 70 centimetres wavelength 433Mhz. we have looked at some design rules at **broken link removed** and have seen that the matching can be done by 1/4 wavelength coax cable or 1/4 wavelength stripline. but how do we calculate the distances from the ground plane and the wide, size, shape ?
Mads & Ivan
We have tried to make an Helix antenna on 70 centimetres wavelength 433Mhz. we have looked at some design rules at **broken link removed** and have seen that the matching can be done by 1/4 wavelength coax cable or 1/4 wavelength stripline. but how do we calculate the distances from the ground plane and the wide, size, shape ?
Mads & Ivan