It’s a skill that radio amateurs pick up over years but which it sometimes comes as a surprise to find that is not shared by everyone, the ability to casually glance at an antenna on a mast or a ...

Maximum transmission efficiency occurs when the load impedance matches the generator impedance. Engineers do this to eliminate standing waves, which can severely damage equipment. Transmission lines ...

Editor's note: To view a PDF version of this article, click here. Propagating radio waves all begin and end with the same component: the antenna. This month and next, I will highlight communication's ...

New understanding of the nature of electromagnetism could lead to antennas small enough to fit on computer chips -- the 'last frontier' of semiconductor design -- and could help identify the points ...

A so-called random wire antenna is an end fed antenna. As typically installed, it is a compromise antenna but great for portable use because it is easy to pack and easy to install. One end goes ...

Isolation refers to keeping multiple antennas separate from one another to avoid interaction effects. In some devices—especially cell phones, where multiple antennas must be squeezed into a small ...

The ultra-wideband, omnidirectional circular ring antenna has a height of 0.047 times the low-frequency wavelength and a width of 0.19 times the wavelength, offering an impedance bandwidth of 12:1.

Selecting an FM antenna for use at a facility is much like choosing any other component: Some cost more than others, some are of higher quality than others, and some have different technical ...