Is it possible to divert bluetooth signals?

[SYuksel]

Hi,

I am developing a project with NRF51822 and i want to block signals in one direction. Is it possible ? And if it is possible, how can i do this ?

Thanks !

[Turbo J]

Use a reflector in the correct position...

[SYuksel]

Thanks for advice Turbo J, but i have already tried it. I used a aluminum foil behind the pcb and nothing changed. And also tried Faraday cage and again nothing changed.

[Roger Clark]

If you put the device in a Faraday cage and you still receive the signals, then you don't have a Faraday cage.

Most likely (somehow) you are radiating via your power lines, assuming you power it externally

Try running on batteries inside a Faraday cage to ensure you have an effective cage before continuing

[SYuksel]

Yes, i power it externally. Thank you so much i will try your advice. Do you have an idea about one direction blocking ?

[Roger Clark]

Depends on the environment as well as the antenna.

Lots of surfaces are partially reflective to 2.4Ghz, so even if the source is on the side of the receiver which you block, there is a strong likelihood that you will pick up reflections

To confirm this, take your battery powered device out into the middle of a football field, and see if you still get signal from the blocked side.

I'd recommend you do the test in reverse, just run a device as a beacon, and shield it in a metal box e.g. Pringles tube

Then see if you can detect it via another device connected to your PC etc

Or simply if you phone can detect it.