Significance of Negative Frequency

Discussion in 'General Electronics Chat' started by salil87, Mar 22, 2012.

  1. salil87

    Thread Starter New Member

    Nov 4, 2011
    18
    0
    Hi
    What is the significance of Negative Frequency?

    Thanks
    Salil
     
  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
    2,936
    488
    Some people give me negative energy. I try to avoid them. Then it becomes insignificant.
     
  3. MrChips

    Moderator

    Oct 2, 2009
    12,440
    3,361
    Negative frequency may appear as an anomaly or an artifact, but it is not.
    Mathematics show that it exist and it does appear in real life.

    Think of positive and negative as displacements from a center point.

    If I take a 100kHz signal and modulate it with a 5kHz signal, I would end up with two frequencies, 95kHz and 105kHz.

    If our center frequency happen to be 3kHz modulated with 5kHz, we would have two frequencies, -2kHz and 8kHz.
     
  4. tedcs

    New Member

    Mar 22, 2012
    2
    0
    It is a product of the "Infinite Improbability Drive."
     
  5. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    2,908
    2,168
    These are imaginary components (Negative frequency) just like the imaginary power component in complex impedance power. The actual frequencies generated would be real and >0. :)
     
    Last edited: Mar 22, 2012
Loading...