Design of a vehicular antenna for GPS/Iridium using a genetic algorithm

We describe an antenna that will operate over the band from about 1225 MHz to 1630 MHz and thus cover both GPS and Iridium frequencies. This antenna radiates nominal right hand circular polarization at elevation angles above about 5/spl deg/ and was designed with a process that uses a genetic algorithm (GA) in conjunction with an electromagnetic code. In this method the beamwidth, VSWR and frequency band are specified and the antenna configuration that most closely produces these characteristics is synthesized.

[1]  D.S. Linden,et al.  Using a real chromosome in a genetic algorithm for wire antenna optimization , 1997, IEEE Antennas and Propagation Society International Symposium 1997. Digest.

[2]  M.F. Iskander,et al.  Comparative study of high performance GPS receiving antenna designs , 1996, IEEE Antennas and Propagation Society International Symposium. 1996 Digest.

[3]  Derek S. Linden,et al.  Automated design and optimization of wire antennas using genetic algorithms , 1997 .