The current distribution, the near field, and the far field of helical antennas are examined. It is found that the application of the helix as an endfire radiator is dependent on two higher Order modes of the helix wave functions. This differs from the application of the helix as a slow wave structure in a traveling wave tube where the lowest order mode of the helix wave functions is utilized.
No takes yet. Share an insight, caveat, or question.
A. Cha (1972) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: