This paper presents an analytical investigation of the direct method of measurement of the source impedance of a linear time-variant source. The direct method yields a frequencydependent e!ective source impedance which is routinely used in a time-invariant analysis to determine the insertion loss of
A photoelectric method for the measurement of spectra of light sources of rapidly varying intensities
β Scribed by H.H. Seliger
- Publisher
- Elsevier Science
- Year
- 1960
- Tongue
- English
- Weight
- 337 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0003-2697
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This paper presents an analytical investigation into the relationship between the characteristics of a linear, time-variant acoustic source, and the e!ective source impedance and source strength which follow if one then assumes the source to be time invariant. It thus models the indirect measurement
## Abstract A new method for the determination of a distributed FET noise model is presented. It is based on the extraction of the intrinsic noiseβcorrelation matrix of an elemental section of the device from the device's noise figure, measured for only one sourceβimpedance state at a number of fre