Genetic Algorithms in Antennas and Smart Antennas  Design Overview: Two Novel Antenna Systems for Triband GNSS Applications and a Circular Switched Parasitic Array for WiMax Applications Developments with the Use of Genetic Algorithms

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td align="left">Frequencies</td><td align="center">VSWR</td><td align="center">Gain (dBi)</td><td align="center">Front-to-back ratio (dB)</td><td align="center">3 dB beamwidth</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td align="left">L1 (1575 MHz)</td><td align="center">1.94</td><td align="center">10</td><td align="center">25</td><td align="center">60°</td></tr><tr><td align="left">L2 (1227 MHz)</td><td align="center">1.58</td><td align="center">9.5</td><td align="center">10.27</td><td align="center">62°</td></tr><tr><td align="left">L5 (1176 MHz)</td><td align="center">1.77</td><td align="center">9.1</td><td align="center">8.64</td><td align="center">64°</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Properties of the proposed helical antenna above ground plane.

International Journal of Antennas and Propagation

tab5

Table 5

Table 5: Genetic Algorithms in Antennas and Smart Antennas  Design Overview: Two Novel Antenna Systems for Triband GNSS Applications and a Circular Switched Parasitic Array for WiMax Applications Developments with the Use of Genetic Algorithms 

Table 5 | Genetic Algorithms in Antennas and Smart Antennas  Design Overview: Two Novel Antenna Systems for Triband GNSS Applications and a Circular Switched Parasitic Array for WiMax Applications Developments with the Use of Genetic Algorithms 