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Fast multi-objective design optimization of compact microstrip impedance transformers is discussed. Our approach exploits approximation models constructed using sampled coarse-mesh EM simulation data in a partitioned design space and response correction techniques for design refinement. Demonstration example of a 50-to-130 ohm wideband transformer is provided.
In this paper, a novel technique for fast multi-objective design optimization of antenna structures has been presented. In our approach, the initial approximation of the Pareto front is obtained using a bisection algorithm which performs sequential partitioning of the design space and refines the new designs by means of poll-type search involving Pareto ranking. This stage of the optimization process...
In this paper, a low-cost formulation of space mapping (SM) for design optimization of antenna structures is investigated. The major challenge is that low-fidelity (or coarse) antenna models are normally obtained from coarse-discretization EM simulations so that their evaluation cost cannot be neglected. Consequently, the SM algorithm has to aim at reducing both the number of fine and coarse model...
This paper presents a multi-band fractal antenna designed for RF energy harvesting. The antenna is based on a general cross-dipole antenna. By adding iterated slot on each pole, a widely multi-band performance is achieved. Size and iteration time of the antenna are optimized via simulation on HFSS, and as a result the antenna covers most of the common RF resources such as 3G, 4G and WLAN in 2.4 GHz...
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