<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-05-30T12:59:26Z</responseDate><request verb="GetRecord" identifier="oai:riuma.uma.es:10630/19818" metadataPrefix="marc">https://riuma.uma.es/rest/oai/request</request><GetRecord><record><header><identifier>oai:riuma.uma.es:10630/19818</identifier><datestamp>2026-02-03T11:46:44Z</datestamp><setSpec>com_10630_2254</setSpec><setSpec>col_10630_37959</setSpec></header><metadata><record xmlns="http://www.loc.gov/MARC21/slim" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/MARC21/slim http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd">
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   <datafield ind2=" " ind1=" " tag="720">
      <subfield code="a">Pérez-Escribano, Mario</subfield>
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   <datafield ind2=" " ind1=" " tag="720">
      <subfield code="a">Márquez-Segura, Enrique</subfield>
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      <subfield code="c">2020-09-21</subfield>
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      <subfield code="a">In this work, a method for the characterization of the relative permittivity in broadband of 3D printing materials is proposed. It uses microstrip lines of different lengths covered with the material to be characterized. Once S-parameters of the structure are obtained, some transformations are performed, using transmission parameters and the line length differences, in order to obtain the propagation constant of the lines, from  which it is possible to extract the characteristics of the material to be studied. The method has been tested by manufacturing and measuring lines covered with ABS material, showing results very close to those of electromagnetic simulation and those shown in the literature for this material.</subfield>
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      <subfield code="a">https://hdl.handle.net/10630/19818</subfield>
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      <subfield code="a">Impresión tridimensional</subfield>
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   <datafield ind2="0" ind1="0" tag="245">
      <subfield code="a">Caracterización en banda ancha de la constante de propagación de materiales de impresión 3D</subfield>
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