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<h1>Electromagnetics</h1>
<h2>Antenna & Electromagnetic Modeling Capabilities</h2>
<p>
<h3>Antenna Modeling, Fabrication and Experimental Validation</h3>
<div class="blockquote">
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<li>
Extensive use of most recent versions of NEC and other advanced numerical analysis tools</li>
<li>Treatment of dielectrics, underground wires, and various wire thicknesses</li>
<li>Analysis of non-linear materials (plasma, territes, EBG, and complex meta-materials)</li>
<li>Analysis of reflector and cavity-type antennas</li>
<li>Effects of radome on various antennas</li>
<li>Treatment of patch, microstrip and MMIC</li>
<li> Special HF antennas and arrays for broadband and tactical deployment</li>
<li> Transportable satcom antenna</li>
<li>Loop antennas for VLF-LF-HF bands</li>
<li> Feed system optimization for specific situations</li>
<li> Dual reflector antennas</li>
<li> Telemetry antennas</li>
<li> Radiometric antennas</li>
<li> L-Band ground terminal mobile and fixed
</li>
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<h3>Some Practical Systems Delivered to U.S. Government Agencies</h3>
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<li>
Short backfire antennas optimized for low cross polarization (NASA)</li>
<li> Helix antennas for extremely rugged configuration (DARPA)</li>
<li>Radome shielding spiral antenna (U.S. Navy)</li>
<li>ELF antenna with noise � 10-10 gauss/ HZ (NSF)
</li>
</ul>
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<h3>Ultra-Wideband Antennas</h3>
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<div class="box"><ul>
<li> We have designed ultra-wideband antennas covering gain and impedance performance over 60:1. It uses broadband elements and applies a genetic algorithm for loading and matching.</li>
</ul>
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<h3>3-D FIPA Antenna</h3>
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<li> A novel 3-D FIPA antenna has been designed that offers extremely wide bandwidth without the grating lobes. The antenna occupies 3-D structure and the beam width, bandwidth and phasing can be controllable. </li>
</ul>
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<h3>Broadband Dipole</h3>
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<li>Modification of the fat dipole configuration using adaptive NEC has resulted in some unique broadband dipole design. The dipoles can cover a wide frequency range and are extremely simple to construct. The most likely applications are in HF and VHF. </li>
</ul>
</div></div><br><center><a href="emlowcrosspol.html"> A New Antenna with Low Cross-Pol</a></center>
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<h3>Available Products</h3>
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<li> <b>Antenna and Electromagnetic Modeling Capabilities</b></li>
<li> <a href="emnec.html" >Modified NEC</a></li>
<li> <a href="emmapping.html" >Detection and Mapping of Underground Structures</a></li>
<li> <a href="emmodeling.html" >Electromagnetic Modeling for Underground Objects</a></li>
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