This month we will look at some of the basics of AM directional antennas, and in subsequent months delve deeper into the directional array. The first thing to remember about antennas is that every one ...

Depending on the phasing, you can cause the array of antennas to be directional in one of three directions. [DX Commander] designed a very modern version of this antenna and shows the theory ...

As antenna technologies were developed and improved in the early 1930s, a few progressive stations began experimenting with multi-element directional arrays. This approach offered two attractive ...

Antennas that are more directional also more sharply roll off in gain away from the main beam maximum. Fig. 2 shows two such patterns to point out this trade-off. An antenna array is simply a set of ...

This type of directional reception is not affected ... When he finishes the final modifications he can drive around with the antenna array on his vehicle and the circle of LEDs inside indicating ...

The phased array technology employs beamforming techniques to combine the power of multiple antennas and create directional signals. By adjusting the phase and amplitude of signals from each ...

Military robots of the future will provide a wireless, reliable, and stealthy communication capability for Soldiers using new technology pioneered by Army researchers. Scientists at the U.S ...

To develop the full potential of directional control by nanoparticles ... achieve high directivities. Yagi–Uda antennas are composed of a linear array of metal rods working as feed, reflector ...