Finally found a High-Quality PDF of "Traveling Wave Antennas" by Walter! 📡📖
This is the apex of Walter’s design theory. It is shaped like a rhombus (diamond). traveling wave antennas walter pdf high quality
A helical conductor above a ground plane. When circumference is ~1 wavelength, the wave travels along the helix with (v_p < c), producing a circularly polarized beam along the axis. Finally found a High-Quality PDF of "Traveling Wave