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The development of wireless power transfer for internet of things (IoT) application is proposed in this paper. For the IoT instrument, the delivered power dependents on the instrument load impedance and the coil distance. Hence, the transfer efficiency is determined by the load impedance and the coil distance. This paper investigates real instrument with different the load impedance and variation...
A wireless power transfer system operated at 6.78MHz for AirFuel specification is demonstrated in this paper. The system includes transceiver, receiver, magnetic resonance coil, and data communication. To monitor the transferred power, a communication path is establish by using the micro-controller, amplitude modulator/demodulator, and voltage/current sensing circuits. All of the modules are integrated...
In this paper, a finite element based generalized impedance boundary condition (FEM-GIBC) is proposed to solve complicated electromagnetic (EM) problems. Complex structures with arbitrary inhomogeneity and shapes are modeled with the finite element method, and their scattering contributions are transformed to generalized impedance conditions on their boundaries. For each sub-domain, a special GIBC...
The performance prediction of double-walled carbon nanotube (DWCNT) array-built field-effect transistors (DWCNTFETs) is performed theoretically. The charge densities and surface potentials of double walls are solved in a self-consistent manner with the effects of wall screening among the DWCNT array treated appropriately. Some comparisons are made between our method and the nonequilibrium Green's...
In this paper, an easily verifiable, necessary and sufficient condition is derived for stability of arbitrarily switched systems with two stable second order linear time-invariant subsystems.
This paper reports a novel structural design of an integrated shadow mask and its fabrication process that can be used for fabrication of passive matrix OLED displays. The integrated shadow mask is composed of two components: laterally spaced and electrically insulating pillars with retrograded side walls and humps disposed nearby the retrograde side walls. The structure is designed such that dead...
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