Recent content by leotorok

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    Faraday cage problem with RFiD

    The performance is indeed worser (10 m is the normal, I'm getting 1 m now with some improvements in the position of the wire). The support of the manufacturer of the tag is a problem. When we contacted them, it was clear that we're knowing more about the product than them. Unfortunately, with...
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    Faraday cage problem with RFiD

    Just a question. Could be possible to connect the antenna of the tag (using a wire or other thing) to the metal structure and use it like a big antenna? If I put the tag inside of the tripod, it's not possible to read it. But, holding it with my hand in the same position, it's possible to read...
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    Faraday cage problem with RFiD

    We're tracking film equipment, including cameras, lens, tripods and other itens. The items are very expensive, demanding a monitoring solution. The client wants to use RFiD (we have been working with it by some time, so we've acquired some expertise). Another demand is that the tags cannot be...
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    Faraday cage problem with RFiD

    Ok, I've searched about skin depth and found this: \delta=\sqrt{{2\rho }\over{\omega\mu}} I've applied it to 900mhz, 13.5mhz and 125khz. The results weren't what I was expecting: Using (aluminium): \rho: 2.82×10−8 \omega: 2pi x frequency \mu: 1.2566650×10−6 The results: 900mhz...
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    Faraday cage problem with RFiD

    I'm working in a tracking solution based on RFiD, that consists on tags without any type of battery or power source. When the antenna generates the signal in the correct frequency, an induction process occur in the tag, generating a response to the antenna (containing the tag's id number)...
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