LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 418

Search options

  1. Book ; Online: A Thru-free Multiline Calibration

    Hatab, Ziad / Gadringer, Michael Ernst / Bösch, Wolfgang

    2023  

    Abstract: This paper proposes a modification to the traditional multiline thru-reflect-line (TRL) or line-reflect-line (LRL) calibration method used for vector network analyzers (VNAs). Our proposed method eliminates the need for a thru (or line) standard by using ...

    Abstract This paper proposes a modification to the traditional multiline thru-reflect-line (TRL) or line-reflect-line (LRL) calibration method used for vector network analyzers (VNAs). Our proposed method eliminates the need for a thru (or line) standard by using an arbitrary transmissive two-port device in combination with an additional reflect standard. This combination of standards allows us to arbitrarily set the location of the calibration plane using physical artifacts. In contrast to the standard multiline TRL method, the suggested approach avoids a post-processing step to shift the calibration plane if a line standard is used. We demonstrate our proposed method with measurements on a printed circuit board (PCB) and compare it to the multiline TRL method with a perfectly defined thru.

    Comment: GitHub: https://github.com/ZiadHatab/thru-free-multiline-calibration
    Keywords Physics - Applied Physics ; Electrical Engineering and Systems Science - Signal Processing
    Publishing date 2023-05-05
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  2. Book ; Online: Propagation of Linear Uncertainties through Multiline Thru-Reflect-Line Calibration

    Hatab, Ziad / Gadringer, Michael Ernst / Bösch, Wolfgang

    2023  

    Abstract: This study proposes a linear approach for propagating uncertainties in the multiline thru-reflect-line (TRL) calibration method for vector network analyzers. The multiline TRL formulation we are proposing applies the law of uncertainty propagation as ... ...

    Abstract This study proposes a linear approach for propagating uncertainties in the multiline thru-reflect-line (TRL) calibration method for vector network analyzers. The multiline TRL formulation we are proposing applies the law of uncertainty propagation as outlined in the ISO Guide to the Expression of Uncertainty in Measurement (GUM) to both measurement and model uncertainties. In addition, we conducted a Monte Carlo analysis using a combination of measured and synthetic data to model various uncertainties, such as additive noise, reflect asymmetry, line mismatch, and line length offset. The results of our linear uncertainty formulation demonstrate agreement with the Monte Carlo method and provide a more efficient means of assessing the uncertainty budget of the multiline TRL calibration.

    Comment: GitHub: https://github.com/ZiadHatab/uncertainty-multiline-trl-calibration
    Keywords Electrical Engineering and Systems Science - Signal Processing ; Physics - Applied Physics
    Publishing date 2023-01-22
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Book ; Online: Symmetric-Reciprocal-Match Method for Vector Network Analyzer Calibration

    Hatab, Ziad / Gadringer, Michael Ernst / Bösch, Wolfgang

    2023  

    Abstract: This paper proposes a new approach, the symmetric-reciprocal-match (SRM) method, for calibrating vector network analyzers (VNAs). The method involves using multiple symmetric one-port loads, a two-port reciprocal device, and a matched load. The load ... ...

    Abstract This paper proposes a new approach, the symmetric-reciprocal-match (SRM) method, for calibrating vector network analyzers (VNAs). The method involves using multiple symmetric one-port loads, a two-port reciprocal device, and a matched load. The load standards consist of two-port symmetric one-port devices, and at least three unique loads are used. However, the specific impedances of the loads are not specified. The reciprocal device can be any transmissive device, although a non-reciprocal device can also be used if only the one-port error boxes are of interest. The matched load is fully defined and can be asymmetric. We numerically demonstrated the proposed method's accuracy with synthetic data and with measurements of coaxial standards using a commercial short-open-load-reciprocal (SOLR) calibration kit with verification standards. An advantage of the proposed method is that only the match standard is defined, whereas the remaining standards are partially defined, either through symmetry or reciprocity.

    Comment: GitHub: https://github.com/ZiadHatab/srm-calibration
    Keywords Electrical Engineering and Systems Science - Signal Processing ; Physics - Instrumentation and Detectors
    Subject code 621
    Publishing date 2023-09-06
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Book ; Thesis: Drops during akinetic epileptic seizures

    Bösch, Willi

    1988  

    Size 21 Bl. : Ill.
    Publishing country Switzerland
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Zürich, Univ., Diss., 1988
    HBZ-ID HT003506210
    Database Catalogue ZB MED Medicine, Health

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    90 E 244 order for loan Magazin

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  5. Article ; Online: Propagation Constant Measurement Based on a Single Transmission Line Standard Using a Two-Port VNA.

    Hatab, Ziad / Abdi, Arezoo / Steinbauer, Gregor / Gadringer, Michael Ernst / Bösch, Wolfgang

    Sensors (Basel, Switzerland)

    2023  Volume 23, Issue 9

    Abstract: This study presents a new method for measuring the propagation constant of transmission lines using a single line standard and without prior calibration of a two-port vector network analyzer (VNA). The method provides accurate results by emulating ... ...

    Abstract This study presents a new method for measuring the propagation constant of transmission lines using a single line standard and without prior calibration of a two-port vector network analyzer (VNA). The method provides accurate results by emulating multiple line standards of the multiline calibration method. Each line standard was realized by sweeping an unknown network along a transmission line. The network need not be symmetric or reciprocal, but must exhibit both transmission and reflection. We performed measurements using a slab coaxial airline and repeated the measurements on three different VNAs. The measured propagation constant of the slab coaxial airline from all VNAs was nearly identical. By avoiding disconnecting or moving the cables, the proposed method eliminates errors related to the repeatability of connectors, resulting in improved broadband traceability to SI units.
    Language English
    Publishing date 2023-05-07
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s23094548
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  6. Book ; Online: Propagation of Measurement and Model Uncertainties through Multiline TRL Calibration

    Hatab, Ziad / Gadringer, Michael / Bösch, Wolfgang

    2022  

    Abstract: In this work, we present a linear uncertainty (LU) propagation treatment of measurement and model uncertainties in multiline thru-reflect-line (TRL) calibration. The proposed method is in accordance with the ISO Guide to the Expression of Uncertainty in ... ...

    Abstract In this work, we present a linear uncertainty (LU) propagation treatment of measurement and model uncertainties in multiline thru-reflect-line (TRL) calibration. The proposed method is in accordance with the ISO Guide to the Expression of Uncertainty in Measurement (GUM). We demonstrate with numerical simulation based on the Monte Carlo (MC) method that our proposed LU method delivers identical uncertainty as the MC method but in a more efficient way.

    Comment: Software implementation available online with additional examples, https://github.com/ZiadHatab/uncertainty-multiline-trl-calibration
    Keywords Electrical Engineering and Systems Science - Signal Processing ; Physics - Applied Physics
    Publishing date 2022-06-21
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  7. Book: KINDER NACH DER SCHEIDUNG: VERFAHREN ZUR REGELUNG DER ELTERLICHEN GEWALT NACH 1671 BGB

    Bosch, Wolfgang

    1981  

    Title variant KINDER NACH DER SCHEIDUNG: VERFAHREN ZUR REGELUNG DER ELTERLICHEN GEWALT NACH PARAGRAPH SECHZEHNHUNDERTEINUNDSIEBZIG BGB
    Size 142 S.
    Document type Book
    Note TUEBINGEN, UNIV., DISS., 1981
    HBZ-ID HT002623924
    Database Catalogue ZB MED Medicine, Health

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    82 D 2054 order for loan Magazin

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Book: Basis-Programme zur Matrizen-Numerik und ihre Anwendung in der Ausgleichsrechnung

    Bosch, Wolfgang

    (Mitteilungen aus dem Institut für Theoretische Geodäsie der Universität Bonn ; 60)

    1980  

    Author's details W. Bosch
    Series title Mitteilungen aus dem Institut für Theoretische Geodäsie der Universität Bonn ; 60
    Collection
    Language German
    Size I, 25 S. : graph. Darst.
    Publishing place Bonn
    Publishing country Germany
    Document type Book
    Note Zsfassung in engl. Sprache
    HBZ-ID HT006356170
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    4' II b, 18197 (60) order for loan Geschlossenes Magazin (U2)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  9. Book: Allgemeine Anforderungen an die Kompetenz von Prüf- und Kalibrierlaboratorien

    Bosch, Wolfgang / Wloka, Monika

    Kommentar zu DIN EN ISO/IEC 17025:2018

    (Beuth Kommentar)

    2018  

    Title variant Prüflaboratorien
    Institution Beuth Verlag
    Deutsches Institut für Normung
    Author's details Wolfgang Bosch, Monika Wloka ; Herausgeber: DIN Deutsches Institut für Normung e.V
    Series title Beuth Kommentar
    Keywords Kalibrieren ; Laboratorium
    Language German
    Size VIII, 271 Seiten
    Edition 3., vollständig überarbeitete Auflage
    Document type Book
    ISBN 9783410275848 ; 9783410275855 ; 3410275843 ; 3410275851
    Database Federal Institute for Risk Assessment

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  10. Book: Allgemeine Anforderungen an die Kompetenz von Prüf- und Kalibrierlaboratorien

    Bosch, Wolfgang / Wloka, Monika

    Kommentar zu DIN EN ISO/IEC 17025:2018

    (Beuth Kommentar)

    2018  

    Title variant Prüflaboratorien
    Institution Beuth Verlag
    Deutsches Institut für Normung
    Author's details Wolfgang Bosch, Monika Wloka ; Herausgeber: DIN Deutsches Institut für Normung e.V
    Series title Beuth Kommentar
    Keywords Kalibrieren ; Laboratorium
    Language German
    Size VIII, 271 Seiten
    Edition 3., vollständig überarbeitete Auflage
    Document type Book
    ISBN 9783410275848 ; 9783410275855 ; 3410275843 ; 3410275851
    Database Federal Office of Consumer Protection and Food Safety

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top