#WIFI HACKER ANTENNA BLUETOOTH#

Because it is looped, only half of the element will be oriented correctly in the wave, forming effectively two antennae in parallel, pointing in opposite directions. It works if you make the antennae look like they do in the diagram, with 3 elements to radiate in all polarisations but is very bulky and delicate, useless for a mobile device.īy looping an antenna you bend the plane that it transmits in into an arc, and by adding two or more of them it is possible to warp the transmitted field so that any orientation of receiving antenna will cut the wave and respond with voltage.īluetooth operates at 2.4GHz - actually a little over, 2480MHz but at this frequency the length of the wire is hard enough to cut and mount exactly and in practice a MM or two does not make a difference. It makes sense to have two elements, one horizontal, one vertical, and transmit both at the same time to create a diagonal wave that a single antenna can pick up. Thankfully though, there is a wave profile that can be used to couple to both horizontal and vertical waves. This is a nuisance on a mobile device, as the antenna gets pointed in all directions. To get the maximum signal, the length of that antenna must match the size of the wave, calculated from its frequency as well as line up in the peaks and troughs properly. This is why you have to make sure your radio antenna is oriented right, and extended properly. If the wire is horizontal, the electrons have nowhere to go and no voltage is transferred. As the wave goes up and down it pulls on the electrons so they move up and down too, creating an AC voltage in the antenna element with the signal superimposed on it.

Obviously, if the transmitter is vertical and the receiver horizontal very little voltage will be transferred by the field they are coupled to. It doesnt work so well through a wall especially if the antennae are not lined up the same way.

#WIFI HACKER ANTENNA BLUETOOTH#

Bluetooth uses standard polarisation to transmit and receive too, which is fine for two well-coupled antennae with a clear line of sight. That means that the transmitter is seriously underpowered, and regulation means it cant be upgraded to a reasonable distance by changing the amount of energy it radiates. It was given a very small cell size, mainly to prevent overspill from one house to another being as each cell was private. One of the reasons Bluetooth has such a poor reception range is that it is designed to be a local comms gateway rather than a network.

Wifi hacker antenna