Calculation of Maximal Applicable Gain for the Generalized and the Direct Method for Extreme Impedances Measurement

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F10%3A00172412" target="_blank" >RIV/68407700:21230/10:00172412 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Calculation of Maximal Applicable Gain for the Generalized and the Direct Method for Extreme Impedances Measurement
Original language description
A mathematical approach for determining the maximal applicable gain of amplifiers, that are used in two recently introduced methods for measurement of extreme input impedances using a common vector network analyzer (VNA) ? the generalized method and thedirect method ? is presented. These two measurement methods exhibit outstanding measurement sensitivity for extreme impedance values ? impedances significantly higher or lower than the 50Ů reference impedance of common measurement systems. The measurement sensitivity is better when gain of the used amplifiers is higher. However, the gain is limited by nonlinearity of the amplifiers and the receivers of the vector network analyzer. Therefore, the gain calculation is derived to make possible to fully exploit the capabilities of the measurement methods without loosing accuracy due to nonlinear effects. An example of calculation for one experimental setup is also presented.
Czech name
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Czech description
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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