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  1. #1
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    FCC band-edge test for 802.11b, 802.11g and 802.11a

    Can anyone tell me the FCC band-edge test spec. for 802.11b, 802.11g and 802.11a and how to slove the band-edge problem?
    Because my AP Router failed in this certification item and I still can not find way to solve this problem.

    Best Regard
    Thanks

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  2. #2
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    fcc band edge

    Well, basically the power outside of the allowed frequency band exceeded the level specified by the FCC. You make the test with a spectum anlyzer while the wireless card is doing its thing.

    You may be missing the spec because:
    You are overmodulating, or not filtering the transmitted signal (usually digitally filtered) enough
    You need a tighter RF filter somewhere
    You are overdriving the output amp and it is generating spectrum regrowth
    Your center frequency might be drifting too low or high, and spilling energy out-of-band
    You could have mistakenly programmed the wireless card to use a frequency outside of those allowed in the US



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  3. #3
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    Re: FCC band-edge test

    Hi Biff

    How are the Band edge conducted emissions measured??

    Can we compare Band edge Conducted emissions and Radiated emissions??



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  4. #4
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    FCC band-edge test

    Conducted emíssions are measured up to 30 MHz according to most EMC standards, they are typically not a problem
    with GHz wireless devices, and also not related to band edges. Generally, detailed measurement methods are specified
    in all respective standards (FCC, ETSI, EN).



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