3 ms·

Hey what's with that 'path loss' equation? Looks sketchy to me.

• rfdave 10y ago
  Looks sketchy in what way?
• madengr 10y ago
  I'd say it is sketchy as people say path loss increases with frequency; well it doesn't if you have the same physical antenna apertures (think parabolic dish). Though the formula is called a loss since it's used that way from a circuit perspective, and you treat the antenna gains as not related to aperture, so loss does then increase with frequency.
  • sunstone 10y ago
    Yes that frequency term is precisely the sketchy bit. Because of that the equation doesn't conserve energy which is normally considered a bad sign. On the other hand to do it properly you have throw out the 'reciprocity' of sending and receiving antennas. They are not really the same at all.