Application of the Kalman Filter/Smoother for accurate material characterization of planar dielectric samples by using free-space measurements at sub-THz frequencies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F23%3AN0000039" target="_blank" >RIV/00177016:_____/23:N0000039 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0263224123001410" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0263224123001410</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.measurement.2023.112577" target="_blank" >10.1016/j.measurement.2023.112577</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Application of the Kalman Filter/Smoother for accurate material characterization of planar dielectric samples by using free-space measurements at sub-THz frequencies

Popis výsledku v původním jazyce

The Kalman Filter/Smoother, as a new post-calibration technique, has been successfully applied for accurate relative complex permittivity epsr extraction of planar dielectric samples using sub-THz free-space transmission scattering parameter s21 measurements. Extracted epsr of the planar polyvinylchloride and polymethylmethacrylate samples without any post-calibration procedure produced non-physical results (violation of the passivity principle) over some frequencies in three frequency bands between 50 and 75 GHz, 75 and 110 GHz, and 110 and 170 GHz, indicating the importance of the application of a post-calibration procedure. It has been demonstrated by s21 measurements and extracted epsr that the Kalman Smoother and the Savitzky–Golay filter, as the other post-calibration technique, produce little offset or deviation in the extracted epsr around the lowest and highest frequencies over the frequency band (or at the intersection of individual frequency bands), as compared with that of the singular spectrum analysis technique, considered as another post-calibration technique.

Název v anglickém jazyce

Application of the Kalman Filter/Smoother for accurate material characterization of planar dielectric samples by using free-space measurements at sub-THz frequencies

Popis výsledku anglicky

The Kalman Filter/Smoother, as a new post-calibration technique, has been successfully applied for accurate relative complex permittivity epsr extraction of planar dielectric samples using sub-THz free-space transmission scattering parameter s21 measurements. Extracted epsr of the planar polyvinylchloride and polymethylmethacrylate samples without any post-calibration procedure produced non-physical results (violation of the passivity principle) over some frequencies in three frequency bands between 50 and 75 GHz, 75 and 110 GHz, and 110 and 170 GHz, indicating the importance of the application of a post-calibration procedure. It has been demonstrated by s21 measurements and extracted epsr that the Kalman Smoother and the Savitzky–Golay filter, as the other post-calibration technique, produce little offset or deviation in the extracted epsr around the lowest and highest frequencies over the frequency band (or at the intersection of individual frequency bands), as compared with that of the singular spectrum analysis technique, considered as another post-calibration technique.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/7AX13009" target="_blank" >7AX13009: Microwave and terahertz metrology for homeland security</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Measurement

ISSN

0263-2241

e-ISSN

1873-412X

Svazek periodika

211

Číslo periodika v rámci svazku

April 2023

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

112577

Kód UT WoS článku

000946727700001

EID výsledku v databázi Scopus

2-s2.0-85150394187