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Whats the meaning of ENR in nosie figure analyzer?

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ENR

What's meaning of "ENR" in nosie figure analyzer?I know it stands for "Exceed Nosie Ratio",But what does it mean?
 

Re: ENR

ENR=(Th-T0)/T0.

Usually it is expressed in dB.

T0 = 290 K (standard noise temperature).

Th [K] is the equivalent noise temperature of the noise source.

The ENR (or Th) characterizes a noise source, particurarly the noise power at its output.

bye
 

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