Abstract

The numerical electromagnetics code (NEC) was used to evaluate the admittance, the average power gain, and the electric near and far fields of a monopole antenna ( lambda /5) mounted on a cubical box ( lambda /3 per side) over a perfectly conducting ground plane. Two models of the box, using surface patches and wire grids, were evaluated. The monopole was positioned at the center, the edge, and at a corner of the box top surface. NEC results were examined and compared with experimental data and with results from 'PATCH' another independent electromagnetic modeling code. Contour and three-dimensional amplitude and phase plots of the near electric fields are presented. Radiation patterns were calculated to relate far-field and near-field behavior of the antenna. It is found that wire grid modeling gave essentially identical results to those using surface patches, attesting to the equivalence of the two numerical techniques in NEC (less than 2 dB differences). >

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.