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A reconfigurable crossed-Vagi patch antenna (CYPA) that yields a circularly polarized pattern is proposed, and optimized by a novel Jumping-Genes Genetic Algorithm. This antenna is formed by two identical orthogonal reconfigurable linear Vagi patch arrays, around a single driven patch element. The main lobe of the reconfigurable crossed-Yagi patch antenna covers the elevation angles from 0° to 47°...
The problem of logistics partner selection is a key problem in the operational process of fourth party logistics (4PL) model. We propose logistics partner selection index system and use the method of AHP to determine weight coefficient of each index, on the basis of analysis of the influence factors of logistics partner selection under the 4PL model. Whereas the 4PL enterprise usually selects more...
A novel Multi-Objective Evolutionary Algorithm (MOEA)-Jumping Genes Genetic Algorithm (JGGA) is used to design planar Ultra-Wide Band (UWB) antennas. The optimization procedure aims at finding an antenna not only with low voltage standing wave ratio (VSWR) and small size, but also with stable radiation pattern and stable radiated power over the ultra-wide band. There are five objective functions and...
An ultra-wideband (UWB) planar antenna optimized by a newly developed Multi-Objective Evolutionary Algorithm- Jumping Genes Genetic Algorithm (JGGA) is proposed. The optimization procedure aims at finding an antenna not only with low voltage standing wave ratio (VSWR) and small size, but also with stable radiation pattern over the wide band. There are five objective functions and they are based on...
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