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RF transmission testing inside a Faraday cage

ralphjy

Since there is RF expertise in the community, so I thought I'd try to get some insight into an area where I don't have much experience.

I'm currently working a project testing BLE transmitters and my current workroom location can experience a fair amount of RF noise in the 2.4GHz ISM band (primarily due to existing WiFi and Bluetooth/BLE).  My primary mitigation when possible is to increase distance from or turn off noise sources.  I started thinking about whether I could test within an RF shield.  My previous experiences with testing within RF enclosures was over 40 years ago and we used room scale enclosures to house the equipment and operators.

I was wondering if anyone has tried small scale enclosures to shield only the EUT and measurement setup.  What would be a good minimum size at this frequency?

TIA for any feedback.

Ralph

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  • I worked for a Canadian national telecommunication company that supported a cellular network. There was a Faraday cage facility on one of the floors for testing RF devices. I visited it once or twice and found it difficult to work in the isolation. Not only was RF eliminated but sound also. It reminded me of the freezer door closing and being trapped inside. I understand it was expensive to build.

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  • I worked for a Canadian national telecommunication company that supported a cellular network. There was a Faraday cage facility on one of the floors for testing RF devices. I visited it once or twice and found it difficult to work in the isolation. Not only was RF eliminated but sound also. It reminded me of the freezer door closing and being trapped inside. I understand it was expensive to build.

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