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

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

76th ARFTG Microwave Measurement Conference

ISBN

978-1-4244-7448-6

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

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Název nakladatele

IEEE Microwave Theory and Techniques Society, US

Místo vydání

Piscataway

Místo konání akce

Clearwater Beach, Florida

Datum konání akce

30. 11. 2010

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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