D.E.V.I.C.E. is an encyclopedia of terms used by manufacturers of test and measurement equipment. T&M Atlantic created this service to better explain the functionality of instruments it offers, and to highlight the latest developments in the world of measurement equipment. We are using such tools as animation to bring words and pictures to life and to create not just an understanding but also an appreciation for technology that goes into the design of every instrument.
D.E.V.I.C.E. on Request
If you are searching for a particular term or definition, please contact us and our engineers will be glad to explain it to you.
The temperature (Ta) that yields the available power spectral density from a source. It is obtained when the corresponding reflection coefficients for the generator and load are complex conjugates. The relationship to the available power Pa is
where k is Boltzmann’s constant
and B is the bandwidth of the power measurement.
The power spectral density across the measurement band is to be constant.
Source: Keysight Technologies. Fundamentals of RF and Microwave. Noise Figure Measurements. Application Note. www.keysight.com