. "RIV/68407700:21230/07:03141145" . . . "103;106" . "Acta Polytechnica" . "425764" . . "Zdokonalen\u00E9 hodnocen\u00ED plan\u00E1rn\u00EDch kalibra\u010Dn\u00EDch standard\u016F metodou TDR preselekce"@cs . . . "P(GA102/04/1079), P(GD102/03/H086), Z(MSM6840770015)" . "CZ - \u010Cesk\u00E1 republika" . . "Calibration and correction methods for the Vector Network Analyzer (VNA) are based on the fundamental assumption of the constant error model. Unfortunately, this assumption is notsatisfied well for planar calibration standards fabricated by etching technology on soft substrates. An evaluation of the error model is affected expecially by variations in the manufacturing process and also by the reproducibility of an assembly. In this paper, we propose error minimizatin by selecting the best combination of available calibration standards based on time domain reflection (TDR) measurement, which can also be obtained by the fourier transformation from the measured S-parameters. The proposed method was verified experimentally using short, open, load and thru (SOLT) standards fabricated on an FR4 laminate substrate which achieves the essential reduction of the measurement error in the frequency range up to 15 GHz."@en . "calibration standards; equivalent circuits; error correction; scattering parameters; vector network analyzer"@en . . . "Improved Evaluatin of Planar Calibration Standards Using the TDR Preselection Method" . . "Improved Evaluatin of Planar Calibration Standards Using the TDR Preselection Method"@en . "Kalibra\u010Dn\u00ED a korek\u010Dn\u00ED metody pro vektorov\u00FD analyz\u00E1tor (VNA) jsou zalo\u017Eeny na z\u00E1kladn\u00EDm p\u0159i\u0159azen\u00ED konstantn\u00EDho chybov\u00E9ho dvoubranu. Bohu\u017Eel takov\u00E9to p\u0159i\u0159azen\u00ED nen\u00ED posta\u010Duj\u00EDc\u00ED pro kalibra\u010Dn\u00ED standardy vyroben\u00E9 leptac\u00ED technologi\u00ED na m\u011Bkk\u00FDch substr\u00E1tech. Spr\u00E1vn\u00E9 ur\u010Den\u00ED chybov\u00E9ho dvoubranu je zvl\u00E1\u0161t\u011B ovlivn\u011Bno nep\u0159esnost\u00ED v\u00FDrobn\u00EDho procesu a tak\u00E9 reprodukovatelnost\u00ED mont\u00E1\u017Ee. V tomto \u010Dl\u00E1nku prezentujeme minimalizaci chyb pou\u017Eit\u00EDm v\u00FDb\u011Bru nejlep\u0161\u00ED kombinace dostupn\u00FDch kalibra\u010Dn\u00EDch standard\u016F. Tento v\u00FDb\u011Br je zalo\u017Een na reflektometrick\u00E9m m\u011B\u0159en\u00ED v \u010Dasov\u00E9 oblasti (TDR), kter\u00E9 m\u016F\u017Ee b\u00FDt tak\u00E9 vypo\u010Dteno fourierovou transformac\u00ED z nam\u011B\u0159en\u00FDch S-parametr\u016F. Uveden\u00E1 metoda byla experiment\u00E1ln\u011B ov\u011B\u0159ena s pou\u017Eit\u00EDm SOLT sady kalibra\u010Dn\u00EDch standard\u016F (zkrat, otev\u0159en\u00FD konec, p\u0159izp\u016Fsoben\u00E1 koncovka, pr\u016Fchoz\u00ED veden\u00ED) vyroben\u00FDch na substr\u00E1tu FR4 a poskytovala podstatnou redukci chyby m\u011B\u0159en\u00ED ve frekven\u010Dn\u00EDm p\u00E1smu do 15GHz."@cs . "4"^^ . . "1"^^ . "21230" . "4-5" . . . . "47" . . "1"^^ . "1210-2709" . . "RIV/68407700:21230/07:03141145!RIV08-GA0-21230___" . . "Calibration and correction methods for the Vector Network Analyzer (VNA) are based on the fundamental assumption of the constant error model. Unfortunately, this assumption is notsatisfied well for planar calibration standards fabricated by etching technology on soft substrates. An evaluation of the error model is affected expecially by variations in the manufacturing process and also by the reproducibility of an assembly. In this paper, we propose error minimizatin by selecting the best combination of available calibration standards based on time domain reflection (TDR) measurement, which can also be obtained by the fourier transformation from the measured S-parameters. The proposed method was verified experimentally using short, open, load and thru (SOLT) standards fabricated on an FR4 laminate substrate which achieves the essential reduction of the measurement error in the frequency range up to 15 GHz." . "Improved Evaluatin of Planar Calibration Standards Using the TDR Preselection Method" . "Zdokonalen\u00E9 hodnocen\u00ED plan\u00E1rn\u00EDch kalibra\u010Dn\u00EDch standard\u016F metodou TDR preselekce"@cs . "Vancl, Jan" . . . . "Improved Evaluatin of Planar Calibration Standards Using the TDR Preselection Method"@en . "[B6A08B1809DE]" .