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A simple oscillator with perfect output power using a series feedback and circuit matching is proposed. The oscillator is implemented by tuning the positive feedback of the source and gate of the transistor and provides a free-running oscillating signal of 12 GHz. The output power of the oscillator is 10.16 dBm. This result is in good agreement with simulation.
An effective method for for controlling the absorption frequency of terahertz (THz) absorber based on graphene is presented in this paper. The absorber consists of graphene-dielectric stack with a resistive sheet on top layer and a perfect electric conductor placed at the bottom layer. A circuit model for graphene absorber was introduced to analyze the mechanism of the absorber. By changing the surface...
Although power grid analysis has been an active research area for a number of years, increasing chip size has exposed new challenges in this traditional topic. The simulation of these large scale networks is becoming a dominant step in the design verification flow and it often requires the very largest computer available to the design team. To spur academic research in this vital verification step,...
Aiming the great phase lag of the control-to-output small signal transfer function of LCC resonant converter, compensation networks composed of a band-stop filter and a single-pole-single-zero network are designed. Matlab and PSpice simulations are finished simultaneously, which verify that the output voltage can be regulated automatically in the disturbance of load changing. And good steady-state...
Since there is a great phase lag in the frequency characteristics of LCC resonant converter, a compensation network composed of a band-stop filter and a leading-and-lagging network is designed to stabilize the system. Simulation results verify that the output voltage can be regulated automatically under the disturbance of load changing and input fluctuation. And good steady-state accuracy and short...
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