New answers tagged

7

An antenna can't "amplify" a signal, it can only concentrate it in certain directions. If you want a peak gain of 15 dB (about 30x the power density of an isotropic radiator), you can only get it over a very small portion of the sphere (about 3% or less). When we talk about "omnidirectional" antennas, usually we mean that the antenna ...


0

Why does a vertical dipole need a boom that offsets the radiating elements from the mount? I'm guessing it has something to do with the interaction between the feed (coax) and the elements? If the mounting post is conductive, it may interact with both the antenna elements and with any currents flowing on the outside of the coax shield. I believe this is the ...


Top 50 recent answers are included