According to Dr. David Jefferies
“A Loop antenna has a continuous conducting path leading from one conductor of a two-wire transmission line to the other conductor. You may think of it as a “coil that radiates”. The coil may have only a single turn.”
Loop antennas are very popular among low band enthusiasts, since allow operations on full wave antennas in a limited space, when compared to dipoles or beverage antennas.
Here a selection of 7 interesting Loop Antenna projects, that includes skywave horizontal loops, square and triangular loops aerials
The multi band HF loop antenna, a good performer on 80 and 40-10 meters. This excellent article covers all aspects of designing a resonant loop antenna, examining gain and radiation patterns, and describing practical notes on how to build this antenna.
A Wire resonant loop antenna for 160 meters band article by N4KC
A rotatable hanging loop antenna that has been specifically designed for hanging in a tree. Horizontally polarized with a broad azimuth pattern and gain of nearly 3dB over a simple horizontal dipole!
An article at NFARL web site about differences in setting up a half-square antenna versus a Loop Skywire by W4QO
The antenna is a 10 - 160 meter horizontal loop fed with 450 ohm ladder line all the way into the ham shack to an Palstar AT1500BAL balanced line antenna tuner
An 80 Mx Horizontal Loop Antenna which also operates on all higher HF Amateur bands including the WARC bands. It has very good performance and is easy to build by VK5SW
A triangular loop that can allow multiband operations from 160 to 6 meters by M0XXT UK Scout Contest Team
More Links ?
You can find many more Loop Antenna Plans in our links Directory
Magnetic Loop antennas will be covered in a future article