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- Oct 23, 2016
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Antennae FAQ....
The Higher db the antenna the more directional it is... (because at high db most are directionality "focused" in their design)
A "panel" antenna has four antennae on it... And are phased to combine those signals together. So to increase the signal strength. But only can "see" 30% left to right up and down... A Coil antenna does the same thing the coil (with the right circumference) Does this Phasing in the coil design... It receives the signal along the coil multiple times and orientations... Combining them also, which in turn boosts the db..
Pole antenna receive the signal once... and only from the direction (orientation) the transmitter antenna is in..(usually vertical)
Visualize ocean waves coming at you... Flowing across the antenna, your pole antenna gets hit once, Your "Coil" one, the wave flows up the coil (gets hit many times) the "patch" Panel gets hit once but it has four antennae and through wiring, it acts as if it was hit four times.... Now turn the ocean wave on its side and you have a "radio wave" (because they are vertical... They are transmitted by "POLE" antennae that are vertical..
He talks about the dish and Yagi type antenna The concept is similar... I explained Pole, Panel, and coil because they are what is normally used in the R/C world... I could explain them also if anyone cares to hear it.... LOL https://www.youtube.com/watch?v=4rvI2_FD9H8
The Higher db the antenna the more directional it is... (because at high db most are directionality "focused" in their design)
A "panel" antenna has four antennae on it... And are phased to combine those signals together. So to increase the signal strength. But only can "see" 30% left to right up and down... A Coil antenna does the same thing the coil (with the right circumference) Does this Phasing in the coil design... It receives the signal along the coil multiple times and orientations... Combining them also, which in turn boosts the db..
Pole antenna receive the signal once... and only from the direction (orientation) the transmitter antenna is in..(usually vertical)
Visualize ocean waves coming at you... Flowing across the antenna, your pole antenna gets hit once, Your "Coil" one, the wave flows up the coil (gets hit many times) the "patch" Panel gets hit once but it has four antennae and through wiring, it acts as if it was hit four times.... Now turn the ocean wave on its side and you have a "radio wave" (because they are vertical... They are transmitted by "POLE" antennae that are vertical..
He talks about the dish and Yagi type antenna The concept is similar... I explained Pole, Panel, and coil because they are what is normally used in the R/C world... I could explain them also if anyone cares to hear it.... LOL https://www.youtube.com/watch?v=4rvI2_FD9H8
