An efficient and straightforward antenna design method is presented that maximizes the ratio of total efficiency specific absorption rate (SAR). This goal achieved with a multiport cluster technique where several ports are excited collectively appropriate feeding weights. These weights found as an eigenvalue solution formulated in terms radiated near-field power antenna. The relies on both (SAR...

Clustering methods provide an useful tool to tackle the problem of exploring large-dimensional data. However many common approaches suffer from being applied in high-dimensional spaces. Building on a dissimilarity-based representation of data, we propose a dimensionality reduction technique which preserves the clustering structure of the data. The technique is designed for cases in which data d...