Very low signal reaching Apple TV

Is there a way to boost the Apple TV antenna? I only have a one bar signal, but I can't move the router (d-link 802.11n) from it's location downstairs, and can't move the Apple TV from it's location upstairs. (An ipod or laptop, when used in the same room as the Apple TV location, have no problems with the WiFi.)

The Apple TV quite likely has more equipment near to or around it that might cause some level if interference. You might consider connecting it by Ethernet or power line adapters.

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    We were talking about the "other component", I can't really see where it lies, must be in the 60-80 sec. range in the graph. If you look at the spectrum, I am getting a huge value around 0.0033 Hz, how do I minimize or remove this ?
    Also, I am using Unevenly Spaced Signal Spectrum.vi, I am not sure what excactly is the unit for the Power Spectrum output. Technical Papers denote, Periodogram algorithm used by this VI, gives Power Spectral Density ? If that's right, then the unit is V^2/HZ.
    Please advise.
    Again, I should thank you for your time and effort.
    I have to meet a deadline this week in finishing this project, and your help is immense to me at this point.
    Thanks & Best Regards,

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