<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1815-5928</journal-id>
<journal-title><![CDATA[Ingeniería Electrónica, Automática y Comunicaciones]]></journal-title>
<abbrev-journal-title><![CDATA[EAC]]></abbrev-journal-title>
<issn>1815-5928</issn>
<publisher>
<publisher-name><![CDATA[Universidad Tecnológica de La Habana José Antonio Echeverría, Cujae]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59282020000300108</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Modification to the AU11-07N slotted waveguide antenna of the Navy-Radar 4000]]></article-title>
<article-title xml:lang="es"><![CDATA[Modificación a la antena de guía de onda ranurada AU11-07N del Navy-Radar 4000]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortega González]]></surname>
<given-names><![CDATA[Daryl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arzola Morris]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sandianes Gálvez]]></surname>
<given-names><![CDATA[José R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica de la Habana José Antonio Echeverría (CUJAE)  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>41</volume>
<numero>3</numero>
<fpage>108</fpage>
<lpage>121</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59282020000300108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59282020000300108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59282020000300108&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In marine and coastal radar applications it is usual to find antennas consisting of a slotted waveguide antenna and a horn antenna. To increase the effectiveness of the cuban coastal surveillance system, it is proposed to modify the AU11-07N slotted waveguide antenna of the Navy-Radar 4000 based on the design of an optimal pyramidal horn antenna, causing the half power beamwidth to be reduced by half in the vertical plane. To achieve the objective, the original antenna is measured and modeled to then simulate it in the Ansoft HFSS software and compare it with the data from the radar manual. Then, the original antenna is modified based on the design of an optimal pyramidal horn, simulated and adjusted to the final dimensions based on the variation in the length of its plates. With the proposed modification, the half power beamwidth is achieved for the vertical plane of 11,30o and for the horizontal plane of 0.71o, a secondary lobe level of -35 dB for the azimuth plane and a final gain of 34 dB, greater than that of the original antenna.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En aplicaciones de radares navales y costeros es usual encontrarse antenas compuestas por una antena de guía de onda ranurada y una antena de bocina. Para incrementar la efectividad del sistema de vigilancia costero cubano se plantea modificar la antena de guía de onda ranurada AU11-07N del Navy-Radar 4000 a partir del diseño de una antena de bocina piramidal óptima provocando la reducción a la mitad del haz de media potencia del sistema por el plano vertical. Para lograr el objetivo, se mide la antena original y se modela para posteriormente simularla en el programa Ansoft HFSS y compararla con los datos del manual del radar. Luego, la antena original es modificada a partir del diseño de una bocina piramidal óptima, simulada y ajustada a las dimensiones finales a partir de la variación del largo de sus placas. Con la modificación propuesta se logra un ancho del haz de media potencia por el plano vertical de 11.300 y por el plano horizontal de 0.710, un nivel de lóbulos secundarios de -35 dB por el plano azimutal y una ganancia final de 34 dB, superior a la de la antena original.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[slotted waveguide antenna]]></kwd>
<kwd lng="en"><![CDATA[slot]]></kwd>
<kwd lng="en"><![CDATA[coastal surveillance]]></kwd>
<kwd lng="en"><![CDATA[horn]]></kwd>
<kwd lng="en"><![CDATA[Navy-Radar]]></kwd>
<kwd lng="es"><![CDATA[antena de guía de onda ranurada]]></kwd>
<kwd lng="es"><![CDATA[ranura]]></kwd>
<kwd lng="es"><![CDATA[vigilancia costera]]></kwd>
<kwd lng="es"><![CDATA[bocina]]></kwd>
<kwd lng="es"><![CDATA[Radar Naval]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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