Astrophysics (Index)About

antenna temperature

(antenna noise temperature)
(parameter in determining noise introduced by an antenna)

Antenna temperature (or antenna noise temperature) is not the physical temperature of the antenna, but a measure of the noise affecting received signal via the antenna. It is a specific instance of noise temperature, a measure the noise of a circuit by citing the temperature that would produce equivalent thermal noise, a type of noise introduced into electric circuits by the temperature of the components. Antenna noise temperature is specific to both frequency and direction and results from:

The noise temperature relates to the power of the noise as follows:

T = P / (kBB)

Further reading:

Referenced by pages:
noise temperature
thermal noise