Title :
Genetic algorithms and method of moments (GA/MoM): A novel integration for antenna design
Author :
Johnson, J.M. ; Rahmat-Samii, Y.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
This paper introduces a novel technique for efficiently integrating genetic algorithms with method of moments (GA/MoM) for antenna design and related electromagnetic problems through the application of direct Z-matrix manipulation (DMM). In the DMM approach to GA/MoM a "mother" impedance or Z-matrix is filled only once at the beginning of the optimization process, and then the GA optimizer operates on subsets of the original "mother" Z-matrix to perform the optimization. Application of DMM to the GA/MoM significantly reduces the total optimization time by eliminating multiple Z-matrix fill operations. The DMM also facilitates the use of matrix partitioning and pre-solving to further reduce the optimization time in many practical cases.
Keywords :
electric fields; electric impedance; genetic algorithms; integral equations; method of moments; microstrip antennas; GA/MoM; antenna design; broadband patch antenna; direct Z-matrix manipulation; electric field integral equation; electromagnetic problems; genetic algorithms; method of moments; mother impedance; optimization process; total optimization time reduction; Algorithm design and analysis; Design optimization; Genetic algorithms; Genetic mutations; Integral equations; Message-oriented middleware; Moment methods; Optimization methods; Vectors; Wire;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.631495
