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  1. RFgeezer

    Voltage Summation instead of Power summation - Am I going Mad?

    HI VE1BLL and Norway 2. The source is just one 50 ohm signal generator that has an output signal with two frequency components F1 and F2, each of the components is 1/2 mW. The addition of power or votlage is done after the two component signal has been captured with the FFT. We are therefore...
  2. RFgeezer

    Voltage Summation instead of Power summation - Am I going Mad?

    Let's assume I inject a radio signal into a receiver, this signal has a total power of 0 dBm (1mW)which is divided equally between two carrier frequencies F1 and F2 so that F1 and F2 are each -3dBm (1/2 mW). Now, let's assume that the receiver takes an FFT of the signal. I believe the voltages...

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