RF reception

Discussion in 'Wireless & RF Design' started by Iodem_Asakura, May 19, 2007.

  1. Iodem_Asakura

    Thread Starter Senior Member

    Sep 14, 2004
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    Probably everyone has noticed that sometimes when someone approaches to some rf equipment like a tv or radio, in some cases the signal get worse and in some cases get better.

    Can someone explain me why is that?
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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  3. Gadget

    Distinguished Member

    Jan 10, 2006
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    Use an external antenna.
     
  4. recca02

    Senior Member

    Apr 2, 2007
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    i believe he wants an explanation or a point of view on why does the rf reception gets better/worse when a human body approaches near the antenna/reciever. i myself have experienced this on several occasions.
     
  5. Iodem_Asakura

    Thread Starter Senior Member

    Sep 14, 2004
    140
    0
    Yes that is what i want.:p
     
  6. beenthere

    Retired Moderator

    Apr 20, 2004
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    As a very imprecise explanation, the human body has a lensing effect on radio waves. At different distances from the receiver, it may cause the waves to concentrate, leading to increased reception strength. At other distances, the effect is to cause the waves to disperse, leading to signal strength fading.
     
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