A Simple Method for Extreme Impedances Measurement

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F07%3A00149315" target="_blank" >RIV/68407700:21230/07:00149315 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/ARFTG.2008.4804276" target="_blank" >http://dx.doi.org/10.1109/ARFTG.2008.4804276</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ARFTG.2008.4804276" target="_blank" >10.1109/ARFTG.2008.4804276</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A Simple Method for Extreme Impedances Measurement

Popis výsledku v původním jazyce

The paper describes a new method for measurement of extreme impedances - impedances with a magnitude of the corresponding reflection coefficient approaching unity. The proposed method employs a common vector network analyzer (VNA) with a reference impedance of 50 ? or 75 ?. The method is based on subtracting a reference reflection coefficient from a reflection coefficient of the device under test (DUT) by a 180-deg 3dB hybrid coupler. This difference is then amplified and measured by the VNA as a transmission coefficient. The method was experimentally verified in frequency band from 1.5 to 3 GHz. A corresponding calibration and correction method is suggested. Applications of the method can be expected in measurements of emerging novel microwave and THzdevices based on carbon nanotubes, whose impedances are in orders of tens or hundreds of k?.

Název v anglickém jazyce

A Simple Method for Extreme Impedances Measurement

Popis výsledku anglicky

The paper describes a new method for measurement of extreme impedances - impedances with a magnitude of the corresponding reflection coefficient approaching unity. The proposed method employs a common vector network analyzer (VNA) with a reference impedance of 50 ? or 75 ?. The method is based on subtracting a reference reflection coefficient from a reflection coefficient of the device under test (DUT) by a 180-deg 3dB hybrid coupler. This difference is then amplified and measured by the VNA as a transmission coefficient. The method was experimentally verified in frequency band from 1.5 to 3 GHz. A corresponding calibration and correction method is suggested. Applications of the method can be expected in measurements of emerging novel microwave and THzdevices based on carbon nanotubes, whose impedances are in orders of tens or hundreds of k?.

Druh

O - Ostatní výsledky

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

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