Title :
Genetically optimized fractile microstrip patch antennas
Author :
Spence, T.G. ; Werner, Douglas H.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
Abstract :
We introduce a new family of microstrip patch antennas that are based upon fractal tile (i.e., fractile) geometries. We call such antennas fractile microstrip antennas. By utilizing the properties of fractal tiles, it is possible to create single-feed modular designs for microstrip patch antennas with broadside gains that are in excess of 12 dB when they are operated to excite high-order localized modes. Two examples of fractile microstrip patch antenna configurations are presented, namely the fudgeflake and Gosper island microstrip antennas. In the design of these antennas, a genetic algorithm was employed to optimize their performance.
Keywords :
antenna feeds; antenna radiation patterns; current density; current distribution; fractals; microstrip antennas; Gosper islands; broadside gains; current density distribution; current distribution; fractal tiles; fractile microstrip patch antennas; fudgeflakes; genetic algorithm; high-order localized modes; radiation patterns; single-feed antennas; Current density; Design optimization; Directive antennas; Feeds; Fractals; Frequency; Microstrip antenna arrays; Microstrip antennas; Patch antennas; Probes;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330333
