Loop antennas are popular with apartment- and other city-dwellers. But if you are just looking for exotic radiators, perhaps try sea water. Or you could have a look at a very short dipole-like ...

He claims it will noticeably improve both transmit and receive by making a quarter-wave monopole into a makeshift dipole antenna system. Per his instructions you basically add a short wire to the ...

Meaning "two poles," a dipole antenna is the simplest type of antenna, consisting of an electrically conducting wire or rod one half the length of the maximum desired wavelength. The wire or rod ...