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2011-07-06
Design and Optimization of Equal Split Broadband Microstrip Wilkinson Power Divider Using Enhanced Particle Swarm Optimization Algorithm
By
Progress In Electromagnetics Research, Vol. 118, 321-334, 2011
Abstract
An enhanced particle swarm optimization (EPSO) algorithm is proposed. To improve convergence accuracy and velocity, we introduce a quadratic interpolation method and perturbation to personal best particles in EPSO. Then, a design procedure based on the EPSO is proposed for the design and optimization of equal split broadband microstrip Wilkinson power dividers (MWPDs). A set of numerical examples and fabricated samples are presented to validate the improvement of the proposed EPSO. Even-odd mode analysis is incorporated in the design procedure to calculate the scattering matrix of the MWPD on the basis of the dispersion and dissipation microstrip line model. A fitness function is then constructed according to the scattering parameters. The optimized widths and lengths of microstrip lines and values of isolation resistors are directly obtained by minimizing the fitness function. EPSO is also compared with the genetic algorithm (GA), standard particle swarm optimization (PSO) and improved particle swarm optimization (IPSO).
Citation
Dong Wang Hong Zhang Tanghong Xu Hao Wang Guoguang Zhang , "Design and Optimization of Equal Split Broadband Microstrip Wilkinson Power Divider Using Enhanced Particle Swarm Optimization Algorithm," Progress In Electromagnetics Research, Vol. 118, 321-334, 2011.
doi:10.2528/PIER11052303
http://www.jpier.org/PIER/pier.php?paper=11052303
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