An old communications antenna in Ghana has begun work as an astronomical radio telescope, making Ghana the first partner in a vast African radio telescope network to repurpose an old communications ...

When broadcasting was in its infancy, amplitude modulation (AM) was the principal modulation system being researched and developed. Once efficient generation of useful RF signals was discovered and ...

A paper published in Nature this week details how researchers have taken a common antenna design and replicated it on the the nanoscale level. When a regular TV aerial that handles radio frequencies ...

The basic design of the radio antenna hasn’t changed in a century. The antenna is usually a set of metal rods roughly half the size of the wavelength they are designed to receive. The electric field ...

Car antennas have come a long way since their inception in the early 20th century. First used in the radio body itself, they have evolved from external whip-style mast antennas to integrated radio and ...