Title :
Broadband and Multiband Antenna Design Using the Genetic Algorithm to Create Amorphous Shapes Using Ellipses
Author :
Griffiths, Lance Allen ; Furse, Cynthia ; Chung, You Chung
Author_Institution :
L-3 Commun. CSW, Salt Lake City, UT
Abstract :
A method is demonstrated for generating compact, broadband and multiband antennas using ellipses to create new amorphous shapes with greater bandwidth and less return loss that previously demonstrated. Four designs are presented including a tri-band patch antenna optimized for low reflection loss at 1.6, 1.8, and 2.45 GHz. A broadband patch is designed for 1.9-2.1 GHz. A dual-band design embedded in a dielectric is created for use at GSM frequencies, and a broadband monopole is created that operates from 2-6 GHz with low reflection loss. The genetic algorithm is used to optimize the designs. FDTD is used to simulate the designs allowing a low reflection loss design embedded directly into a heterogeneous structure or dielectric material
Keywords :
UHF antennas; broadband antennas; finite difference time-domain analysis; genetic algorithms; microstrip antennas; multifrequency antennas; 1.9 to 2.1 GHz; 2 to 6 GHz; FDTD; UHF; amorphous shape; broadband antenna; dielectric material; genetic algorithm; multiband antenna design; triband patch antenna; Algorithm design and analysis; Amorphous materials; Bandwidth; Broadband antennas; Design optimization; Dielectric losses; Genetic algorithms; Patch antennas; Reflection; Shape; Broadband; genetic algorithm (GA); microstrip;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.882154
