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The future development of the railway is highly desired to evolve into a new era where infrastructure, trains, travelers, and goods will be increasingly interconnected to provide high comfort, with optimized door-to-door mobility at higher safety. For this vision, it is required to realize seamless high data rate wireless connectivity for railways. To improve the safety and comfort of future railways,...
A miniaturized coplanar waveguide-fed (CPW) ultra-wideband (UWB) printed antenna is designed and optimized with S11 < 10 dB and bandwidth of 3.1 ∼ 10.5 GHz, i.e., 3.4:1 ration bandwidth. The miniaturization is achieved by cutting out a half-elliptical notch in the original half-elliptical metallic patch that acts as the radiator, and the size of metallic patch is reduced to less than 72% of the...
We present a new method, suitable for food quality management by wirelessly monitoring pH level changes in food with a flexible pH sensor embedded in a batteryless radio-frequency (RF) transponder. The wireless sensor tag includes a flexible pH sensor based on miniature iridium oxide and silver chloride (AgCl) sensing electrodes integrated on a deformable substrate, and batteryless...
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