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A single supply CMOS up level shifter (rsc-ls), for upconverting signals from 0.45V-0.9V logic level range up to 1V power supply voltage domain (Vdd), is introduced. From simulations results, the proposed shifter provides improvements of 63% and 69% in energy consumption and speed, respectively, when compared with a similar design, in 65nm CMOS process and low threshold voltage. For a Vdd of 1.2V...
We experimentally demonstrate adiabatic soliton propagation in the fundamental mode of a few mode optical fibre and more complex behaviour in a higher order mode, indicating that the impact of nonlinearities differs for each mode.
Finding relevant documents in digital libraries has been a well studied problem in information retrieval. It is not uncommon to see users browsing digital collections without having a clear idea of the keyword search that they should perform. However, we believe that such initial query search is not totally independent from the target search. Therefore, we use these initial document selections to...
In this paper, the noise filtering problem (??de-noising?? problem) is approached via a suitable modification of the traditional Luenberger observer approach, also known as the ??high gain observer?? approach (HGO). The HGO observer is, fundamentally, a Luenberger observer with large stable eigenvalues of the output estimation error dynamics. HGO and some of its modifications have been particularly...
In this paper the complete state of the art of UWB is presented, ranging from the theory of the wireless channel, measurements, channel modeling the use of UWB in multiple antenna systems. This work presents preliminary results of a measurement campaign accomplished in the Technical University of Cartagena. Measurements were performed from 2 GHz to 5 GHz using a Vector Network Analyzer (VNA), and...
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