It’s small, lightweight, strong, only requires a single support, needs no rotator, gives full size dipole performance on all 5 HF bands, is fed by a single 50 ohm coax, and produces a horizontally polarized signal that minimizes RF interference. Introducing the Cobweb Antenna. Actually it’s been around for some time and…

The Construction and Analysis of a Low Cost Omnidirectional Horizontally Polarized Antenna for 144 MHz by Dr. Carol F. Milazzo, KP4MD

Check out this homemade vertical for 7 MHz as constructed by Sergio Valente, PY1BEK. Read more about it here.