Noise Figure Measurement - A Practical Approach

IV. Two-port Network Characterization:

            A two-port network can be represented as below:

The noise in a circuit can be characterized by the following parameters:

1. Gain, G
2. Bandwidth, B
3. Noise Figure, F

Assuming that the input is driven by noise temperature at T, the output noise of the two-port network is given by kTGBF, where G is the gain, B is the bandwidth, and F is the Noise figure of the circuit under consideration.

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