We have posted articles in the past on directional antennas such as Yagi antennas used for transmitter hunting otherwise known as fox hunting. Those types of antennas and reception suffer from one ...

The author is vice president of engineering, Dielectric LLC. This article is based on a paper prepared for the NAB Broadcast Engineering and IT Conference of the NAB Show and is published with ...

The authors are president and vice president, respectively, of Communications Technologies Inc., a consultancy in Marlton, N.J. Fig. 1: Measured vertical (purple) and horizontal (blue) field strength ...

A log-periodic antenna, also known as a log-periodic array or aerial, is a directional and narrow beam antenna that operates over a wide bandwidth. Its advantage is that it exhibits essentially ...

Within a few years, researchers at the United Kingdom’s University of Birmingham could provide a new beam steering antenna usable with ultra-high radio frequencies that may be critical to future ...

[Bill Meara] has finished his latest project, a Moxon antenna for HF on 17 meters. [Bill] is well-known here on Hackaday. When not building awesome radios, he can be found ranting about ham radio. His ...

If you could squeeze two or three times more cellular telephone conversations into the same amount of bandwidth, how much would that be worth? To most wireless companies, the answer is, millions of ...

Written by Joseph Darlington, P.E. When building any radio system, the scarcest and most precious system component is not the radios, the antennas nor the towers, but available “clean” radio channels ...

Doppler radar uses the Doppler effect to measure the radial velocity of targets in the antenna's directional beam. The Doppler effect shifts the received frequency up or down based on the radial ...