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This paper describes the application of photovoltaic solar cells in planar antenna structures. The radiating patch element of a planar antenna is replaced by a solar cell. The original feature of a solar cell (DC current generation) remains, but additionally the cell is now able to receive and transmit electromagnetic waves. For a proper performance of… (More)
The influence of codopants on the optical and thermal properties of ytterbium- and neodymium-doped fibers for high-power applications was investigated concerning absorption, spectral and time-dependent fluorescence, loss, crystallization behaviour and diffusion interplay of the dopants.