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We report a novel type of RF component using two-terminal III-Nitride heterostructure varactor with capacitively-coupled contacts (C3) which can be used as a RF switch as well as a power limiter(PL) or other control device type. This C3 varactor consists of two electrodes deposited on top of an AIGaN/GaN heterostructure forming capacitors between the electrode and the 2DEG channel. C3 electrodes allow...
We report on the low-loss microwave switch monolithic microwave integrated circuit (MMIC) built using voltage-controlled capacitors formed by the two Schottky contacts deposited over an AlGaN/GaN heterostructure. A symmetrical structure of the varactor allows for either positive or negative control voltage. A small electrode and a spacing size of 2 ensure low on-impedance. The fabricated...
Brain computer interface (BCI) algorithms are used to predict the torque generation in the direction of shoulder abduction or elbow flexion using scalp EEG signals from 163 electrodes. Based on features extracted from both frequency and time domains, three classifiers are employed including support vector classifier, classification trees and K nearest neighbor. Support vector classifier achieves the...
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