An investigation of near fields for HF shipboard antennas: surface PATCH and wire grid modeling using the Numerical Electromagnetics Code

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dc.contributor.advisorAdler, Richard W.
dc.contributor.advisorBreakall, James K.
dc.contributor.authorElliniadis, Panagiotis
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentElectrical and Computer Engineering
dc.dateDecember 1988
dc.date.accessioned2012-11-27T18:17:54Z
dc.date.available2012-11-27T18:17:54Z
dc.date.issued1988-12
dc.description.abstractThe Numerical Electromagnetics Code (NEC) was used to evaluate the admittance, average power gain, and the electric near and far field of a monopole antenna mounted on a cubical box over a perfectly conducting ground plane. Two models of the box, employing surface patches and wire grids, were evaluated. The monopole was positioned at the center, the edge, and at a corner of the box's top surface. Admittance and average power gain of the antenna were calculated. NEC results were examined and compared with experimental data and with results from "PATCH", another independent electromagnetic modeling code. The near electric field was calculated for both models. Computer graphics techniques were presented for plotting NEC near field results using DISSPLA (Display Integrated Software System and Plotting Language), a commercial graphics package. Contour and 3-D amplitude, and phase plots of the near electric fields were presented. Radiation patterns were calculated to relate far field and near field behavior of the antenna. Surface patch and wire grid models are compared and conclusions were presented.en_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.
dc.description.funderO&MN, Direct Fundingen_US
dc.description.serviceLieutenant, Hellenic Navyen_US
dc.description.sponsorshipNaval Ocean Systems Centeren_US
dc.description.urihttp://archive.org/details/aninvestigationo1094523280
dc.identifier.npsreportNPS-62-89-016
dc.identifier.urihttps://hdl.handle.net/10945/23280
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsCopyright is reserved by the copyright owneren_US
dc.subject.authorNear fieldsen_US
dc.subject.authorNEC (Numerical Electromagnetics Code)en_US
dc.subject.authorAntennaen_US
dc.subject.authorMonopoleen_US
dc.subject.authorWire griden_US
dc.subject.authorSurface patchen_US
dc.subject.authorAdmittanceen_US
dc.subject.lcshAntennas (Electronics)en_US
dc.titleAn investigation of near fields for HF shipboard antennas: surface PATCH and wire grid modeling using the Numerical Electromagnetics Codeen_US
dc.typeThesisen_US
dspace.entity.typePublication
etd.thesisdegree.disciplineElectrical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.nameM.S. in Electrical Engineeringen_US
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